: nply/wmenu

Apply suckless-inspired C style with AStyle config

diff --git a/.astylerc b/.astylerc
@@ -0,0 +1,13 @@
+# Closest AStyle approximation of https://suckless.org/coding_style/.
+# Manual conventions (declarations at block start, 79 columns, comments)
+# are not reliably enforceable by AStyle.
+style=kr
+indent=tab=8
+pad-oper
+pad-header
+pad-comma
+align-pointer=name
+break-return-type
+max-code-length=79
+max-code-length-mode=code
+suffix=none

diff --git a/HACKING b/HACKING
@@ -10,6 +10,17 @@ Build
 -----
     make
 
+Style
+-----
+Follow https://suckless.org/coding_style/ where practical for Win32 C.
+Format the tracked C sources with:
+
+    astyle --options=none --project=.astylerc wmenu.c test_stream.c arg.h
+
+AStyle covers indentation, braces, function layout, and most line breaks;
+review comments and long Win32 directives manually. Keep the existing C99
+bool usage rather than changing program logic just to satisfy a style rule.
+
 Dependencies
 ------------
 No external source dependencies. The byte-safe subsequence matcher lives in

diff --git a/test_stream.c b/test_stream.c
@@ -1,270 +1,285 @@
+/* See LICENSE for license details. */
+#include <assert.h>
+
 #define main wmenu_main
 #include "wmenu.c"
 #undef main
-#include <assert.h>
 
 static int draw_calls;
 static bool painted_selected[16];
-static LRESULT CALLBACK TestWndProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
+static LRESULT CALLBACK
+TestWndProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
 {
-    if (msg == WM_DRAWITEM) {
-        DRAWITEMSTRUCT *draw = (DRAWITEMSTRUCT *)lp;
-        ++draw_calls;
-        if (draw->itemID < 16) painted_selected[draw->itemID] = (draw->itemState & ODS_SELECTED) != 0;
-    }
-    return WndProc(hwnd, msg, wp, lp);
+	if (msg == WM_DRAWITEM) {
+		DRAWITEMSTRUCT *draw = (DRAWITEMSTRUCT *)lp;
+		++draw_calls;
+		if (draw->itemID < 16) painted_selected[draw->itemID] =
+			        (draw->itemState & ODS_SELECTED) != 0;
+	}
+	return WndProc(hwnd, msg, wp, lp);
 }
 
-int main(int argc, char **argv)
+int
+main(int argc, char **argv)
 {
-    assert(fit_lines(INT_MAX, 300) == 12); /* Oversized values are still safe. */
-    assert(fit_lines(-1, 300) == 12); /* -l-1 fills the screen. */
-    assert(fit_lines(0, 300) == 5);
-    assert(fit_lines(7, 35) == 1);
-    assert(has_match("aC", "ABC"));
-    assert(!has_match("Ab", "abc")); /* Default smart case. */
-    ignore_case = true;
-    assert(has_match("Ab", "abc")); /* -i also folds uppercase query bytes. */
-    assert(has_match("AB", "alphabet"));
-    ignore_case = false;
-    assert(has_match("\xc3\xa9", "caf\xc3\xa9"));
-    assert(!has_match("\xc3\xa9", "caf\xc3\x89"));
-    FILE *input = tmpfile();
-    assert(input);
-    char long_row[8193];
-    memset(long_row, 'x', sizeof long_row - 1);
-    long_row[sizeof long_row - 1] = 0;
-    assert(fputs(long_row, input) >= 0);
-    assert(fputs("\r\nnext\r\npartial", input) >= 0);
-    rewind(input);
-    char *line = NULL;
-    size_t capacity = 0;
-    assert(read_line(input, &line, &capacity) == 1);
-    assert(!strcmp(line, long_row));
-    assert(read_line(input, &line, &capacity) == 1 && !strcmp(line, "next"));
-    assert(read_line(input, &line, &capacity) == 1 && !strcmp(line, "partial"));
-    assert(read_line(input, &line, &capacity) == 0);
-    free(line);
-    fclose(input);
+	assert(fit_lines(INT_MAX, 300) == 12); /* Oversized values are still safe. */
+	assert(fit_lines(-1, 300) == 12); /* -l-1 fills the screen. */
+	assert(fit_lines(0, 300) == 5);
+	assert(fit_lines(7, 35) == 1);
+	assert(has_match("aC", "ABC"));
+	assert(!has_match("Ab", "abc")); /* Default smart case. */
+	ignore_case = true;
+	assert(has_match("Ab", "abc")); /* -i also folds uppercase query bytes. */
+	assert(has_match("AB", "alphabet"));
+	ignore_case = false;
+	assert(has_match("\xc3\xa9", "caf\xc3\xa9"));
+	assert(!has_match("\xc3\xa9", "caf\xc3\x89"));
+	FILE *input = tmpfile();
+	assert(input);
+	char long_row[8193];
+	memset(long_row, 'x', sizeof long_row - 1);
+	long_row[sizeof long_row - 1] = 0;
+	assert(fputs(long_row, input) >= 0);
+	assert(fputs("\r\nnext\r\npartial", input) >= 0);
+	rewind(input);
+	char *line = NULL;
+	size_t capacity = 0;
+	assert(read_line(input, &line, &capacity) == 1);
+	assert(!strcmp(line, long_row));
+	assert(read_line(input, &line, &capacity) == 1 && !strcmp(line, "next"));
+	assert(read_line(input, &line, &capacity) == 1 && !strcmp(line, "partial"));
+	assert(read_line(input, &line, &capacity) == 0);
+	free(line);
+	fclose(input);
 
-    InitializeCriticalSection(&items_lock);
-    INITCOMMONCONTROLSEX icc = { sizeof icc, ICC_PROGRESS_CLASS };
-    assert(InitCommonControlsEx(&icc));
-    make_font();
-    win_w = 400;
-    win_h = 300;
-    input_done = true;
-    has_items = true;
-    WNDCLASSW wc = {0};
-    wc.lpfnWndProc = TestWndProc;
-    wc.hInstance = GetModuleHandleW(NULL);
-    wc.lpszClassName = L"wmenu-test";
-    assert(RegisterClassW(&wc));
-    main_hwnd = CreateWindowW(L"wmenu-test", L"", WS_OVERLAPPEDWINDOW, 0, 0, 400, 300, NULL, NULL, wc.hInstance, NULL);
-    list_hwnd = CreateWindowW(L"LISTBOX", L"", WS_CHILD | WS_VSCROLL | LBS_NODATA | LBS_OWNERDRAWFIXED,
-                              0, 0, 400, 300, main_hwnd, (HMENU)ID_COMBO, wc.hInstance, NULL);
-    progress_hwnd = CreateWindowW(PROGRESS_CLASSW, L"", WS_CHILD, 0, 290, 400, 10, main_hwnd, NULL, NULL, NULL);
-    input_hwnd = CreateWindowW(L"EDIT", L"", WS_CHILD, 0, 0, 400, 28, main_hwnd, (HMENU)ID_EDIT, wc.hInstance, NULL);
-    assert(list_hwnd && progress_hwnd && input_hwnd);
-    ui_fiber = ConvertThreadToFiber(NULL);
-    assert(ui_fiber);
-    search_fiber = CreateFiber(0, search_fiber_run, NULL);
-    assert(search_fiber);
-    bool stress = argc > 1 && !strcmp(argv[1], "stress");
-    ShowWindow(main_hwnd, SW_SHOWNOACTIVATE);
-    ShowWindow(list_hwnd, SW_SHOWNOACTIVATE);
-    assert(add_item("item-0"));
-    int saved_capacity = item_capacity;
-    char **saved_items = items;
-    item_count = item_capacity = INT_MAX;
-    assert(!add_item("overflow"));
-    assert(item_count == INT_MAX && items == saved_items);
-    item_count = 1;
-    item_capacity = saved_capacity;
-    WndProc(main_hwnd, WM_STDIN_CHUNK, 0, 0);
-    UpdateWindow(list_hwnd);
-    assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 1);
-    assert(draw_calls > 0); /* First streamed row must actually paint. */
-    vi_mode = true;
-    normal_mode = false;
-    assert(InputProc(input_hwnd, WM_KEYDOWN, VK_ESCAPE, 0) == 0 && normal_mode);
-    MSG quit;
-    assert(!PeekMessageW(&quit, NULL, WM_QUIT, WM_QUIT, PM_NOREMOVE));
-    normal_mode = false;
-    assert(ListProc(list_hwnd, WM_KEYDOWN, VK_ESCAPE, 0) == 0 && normal_mode);
-    assert(!PeekMessageW(&quit, NULL, WM_QUIT, WM_QUIT, PM_NOREMOVE));
-    vi_mode = normal_mode = false;
-    for (int i = 1; i < 60000; ++i) {
-        char buf[2700];
-        sprintf(buf, "item-%d", i);
-        if (stress) {
-            size_t len = strlen(buf);
-            memset(buf + len, 'x', 2699 - len);
-            buf[2699] = 0; /* About 155 MiB of line data in stress mode. */
-        }
-        assert(add_item(buf));
-    }
-    refill_list("");
-    assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 60000);
-    SendMessageW(list_hwnd, LB_SETCURSEL, 0, 0);
-    UpdateWindow(list_hwnd);
-    visit_location(-1); /* Empty history and both ends are no-ops. */
-    visit_location(1);
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
-    list_move(5);
-    list_move(5);
-    struct key_state ctrl = { true, false, false };
-    assert(handle_global_keys('O', ctrl));
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 5);
-    visit_location(-1);
-    visit_location(-1);
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
-    assert(handle_global_keys('I', ctrl));
-    visit_location(1);
-    visit_location(1);
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 10);
-    visit_location(-1);
-    list_move(2);
-    visit_location(1); /* A new move discards the old forward branch. */
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 7);
-    SendMessageW(list_hwnd, LB_SETCURSEL, 9, 0);
-    WndProc(main_hwnd, WM_COMMAND, MAKEWPARAM(ID_COMBO, LBN_SELCHANGE), (LPARAM)list_hwnd);
-    visit_location(-1);
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 7);
-    location_count = location_cursor = 0;
-    for (int i = 0; i < LOCATION_LIMIT + 2; ++i) record_location(i, i + 1);
-    assert(location_count == LOCATION_LIMIT && location_cursor == LOCATION_LIMIT - 1);
-    assert(locations[0].item == 3); /* Oldest positions drop off at the limit. */
-    for (int i = 0; i < location_count; ++i) free(locations[i].query);
-    location_count = location_cursor = 0;
-    list_move(-2);
-    list_move(5);
-    assert(add_item("extra-row"));
-    input_done = false;
-    WndProc(main_hwnd, WM_TIMER, TIMER_PROGRESS, 0); /* Partial batch before EOF. */
-    input_done = true;
-    update_progress();
-    UpdateWindow(list_hwnd);
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 10);
-    assert(SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0) == 0);
-    assert(!painted_selected[5] && painted_selected[10]);
-    list_move(-5);
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 5);
-    assert(painted_selected[5] && !painted_selected[10]);
-    list_move(-5);
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
-    assert(painted_selected[0] && !painted_selected[5]);
-    SendMessageW(list_hwnd, LB_SETCURSEL, 59999, 0);
-    char *last = current_text();
-    assert(last && !strncmp(last, "item-59999", 10));
-    free(last);
-    refill_list("");
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 59999);
-    refill_list("item-1");
-    search_step();
-    assert(search_pos == SEARCH_BATCH);
-    assert(location_count > 0); /* Previous search is retained. */
-    int searches = location_count;
-    refill_list("item-12");
-    refill_list("item-123");
-    refill_list("item-1");
-    assert(location_count == searches); /* Editing one query is not four jumps. */
-    while (search_pos < 1024) search_step();
-    int old_item = matches[match_count - 1];
-    SendMessageW(list_hwnd, LB_SETCURSEL, match_count - 1, 0);
-    assert(SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0) > 0);
-    SetWindowTextW(input_hwnd, L"item-1");
-    SetWindowTextW(input_hwnd, L""); /* EN_CHANGE: clearing returns to the top. */
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
-    assert(SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0) == 0);
-    visit_location(-1);
-    assert(!strcmp(search_query, "item-1"));
-    search_step();
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == LB_ERR);
-    char *pending_text = current_text(); /* Enter must use the saved line, not row zero. */
-    assert(pending_text && !strcmp(pending_text, items[old_item]));
-    free(pending_text);
-    while (search_pos <= old_item) search_step();
-    assert(row_item((int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0)) == old_item);
-    visit_location(1);
-    assert(!strcmp(search_query, ""));
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
-    visit_location(-1);
-    search_step();
-    list_move(1); /* Manual navigation cancels a pending history restore. */
-    assert(pending_item == -1 && SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
-    visit_location(-1);
-    assert(pending_item == old_item && SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == LB_ERR);
-    refill_list("");
-    refill_list("item-1");
-    search_step();
-    refill_list("item-59999"); /* Cancel the previous search and start over. */
-    assert(progress_visible);
-    while (search_pos < item_count) search_step();
-    assert(match_count == 1 && matches[0] == 59999);
-    assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 1);
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
-    last = current_text();
-    assert(last && !strncmp(last, "item-59999", 10));
-    free(last);
-    assert(!progress_visible);
-    HDC screen = GetDC(NULL);
-    HDC dc = CreateCompatibleDC(screen);
-    HBITMAP bitmap = CreateCompatibleBitmap(screen, 250, 30);
-    HGDIOBJ old = SelectObject(dc, bitmap);
-    DRAWITEMSTRUCT draw = {0};
-    draw.CtlID = ID_COMBO;
-    draw.itemID = 0;
-    draw.itemState = ODS_SELECTED;
-    draw.hDC = dc;
-    draw.rcItem.right = 250;
-    draw.rcItem.bottom = 30;
-    assert(WndProc(main_hwnd, WM_DRAWITEM, ID_COMBO, (LPARAM)&draw) == TRUE);
-    assert(GetPixel(dc, 1, 1) == GetSysColor(COLOR_HIGHLIGHT));
-    SelectObject(dc, old);
-    DeleteObject(bitmap);
-    DeleteDC(dc);
-    ReleaseDC(NULL, screen);
-    refill_list("");
-    assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 60001);
-    ShowWindow(main_hwnd, SW_SHOWNOACTIVATE);
-    ShowWindow(list_hwnd, SW_SHOWNOACTIVATE);
-    UpdateWindow(list_hwnd);
-    assert(!GetUpdateRect(list_hwnd, NULL, FALSE));
-    SendMessageW(list_hwnd, LB_SETCURSEL, 59999, 0);
-    int kept_top = (int)SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0);
-    assert(add_item("item-60000"));
-    refill_list("");
-    assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 60002);
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 59999);
-    assert(SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0) == kept_top);
-    RECT dirty;
-    assert(!GetUpdateRect(list_hwnd, &dirty, FALSE) || IsRectEmpty(&dirty));
-    /* Count/scrollbar may update, but the existing client rows stay untouched. */
-    refill_list("tail-special");
-    search_step();
-    input_done = false;
-    assert(add_item("tail-special"));
-    while (search_pos < item_count) search_step();
-    assert(match_count == 1 && matches[0] == 60002);
-    input_done = true;
-    update_progress();
-    assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 1);
-    assert(add_item("caf\xc3\xa9"));
-    SetWindowTextW(input_hwnd, L"\x00e9"); /* UTF-8 edit text goes through the search path. */
-    while (search_pos < loaded_count()) search_step();
-    assert(match_count == 1 && matches[0] == 60003);
-    add_selection();
-    assert(selected_count == 1 && !strcmp(selected[0], "caf\xc3\xa9"));
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == LB_ERR);
-    char *after_add = current_text();
-    assert(after_add && !*after_add); /* Enter would output only added rows. */
-    free(after_add);
-    list_move(1);
-    assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
-    DeleteFiber(search_fiber);
-    ConvertFiberToThread();
-    DestroyWindow(main_hwnd);
-    DeleteCriticalSection(&items_lock);
-    return 0;
+	InitializeCriticalSection(&items_lock);
+	INITCOMMONCONTROLSEX icc = { sizeof icc, ICC_PROGRESS_CLASS };
+	assert(InitCommonControlsEx(&icc));
+	make_font();
+	win_w = 400;
+	win_h = 300;
+	input_done = true;
+	has_items = true;
+	WNDCLASSW wc = {0};
+	wc.lpfnWndProc = TestWndProc;
+	wc.hInstance = GetModuleHandleW(NULL);
+	wc.lpszClassName = L"wmenu-test";
+	assert(RegisterClassW(&wc));
+	main_hwnd = CreateWindowW(L"wmenu-test", L"", WS_OVERLAPPEDWINDOW, 0, 0, 400,
+	                          300, NULL, NULL, wc.hInstance, NULL);
+	list_hwnd = CreateWindowW(L"LISTBOX", L"",
+	                          WS_CHILD | WS_VSCROLL | LBS_NODATA | LBS_OWNERDRAWFIXED,
+	                          0, 0, 400, 300, main_hwnd, (HMENU)ID_COMBO, wc.hInstance, NULL);
+	progress_hwnd = CreateWindowW(PROGRESS_CLASSW, L"", WS_CHILD, 0, 290, 400, 10,
+	                              main_hwnd, NULL, NULL, NULL);
+	input_hwnd = CreateWindowW(L"EDIT", L"", WS_CHILD, 0, 0, 400, 28, main_hwnd,
+	                           (HMENU)ID_EDIT, wc.hInstance, NULL);
+	assert(list_hwnd && progress_hwnd && input_hwnd);
+	ui_fiber = ConvertThreadToFiber(NULL);
+	assert(ui_fiber);
+	search_fiber = CreateFiber(0, search_fiber_run, NULL);
+	assert(search_fiber);
+	bool stress = argc > 1 && !strcmp(argv[1], "stress");
+	ShowWindow(main_hwnd, SW_SHOWNOACTIVATE);
+	ShowWindow(list_hwnd, SW_SHOWNOACTIVATE);
+	assert(add_item("item-0"));
+	int saved_capacity = item_capacity;
+	char **saved_items = items;
+	item_count = item_capacity = INT_MAX;
+	assert(!add_item("overflow"));
+	assert(item_count == INT_MAX && items == saved_items);
+	item_count = 1;
+	item_capacity = saved_capacity;
+	WndProc(main_hwnd, WM_STDIN_CHUNK, 0, 0);
+	UpdateWindow(list_hwnd);
+	assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 1);
+	assert(draw_calls > 0); /* First streamed row must actually paint. */
+	vi_mode = true;
+	normal_mode = false;
+	assert(InputProc(input_hwnd, WM_KEYDOWN, VK_ESCAPE, 0) == 0 && normal_mode);
+	MSG quit;
+	assert(!PeekMessageW(&quit, NULL, WM_QUIT, WM_QUIT, PM_NOREMOVE));
+	normal_mode = false;
+	assert(ListProc(list_hwnd, WM_KEYDOWN, VK_ESCAPE, 0) == 0 && normal_mode);
+	assert(!PeekMessageW(&quit, NULL, WM_QUIT, WM_QUIT, PM_NOREMOVE));
+	vi_mode = normal_mode = false;
+	for (int i = 1; i < 60000; ++i) {
+		char buf[2700];
+		sprintf(buf, "item-%d", i);
+		if (stress) {
+			size_t len = strlen(buf);
+			memset(buf + len, 'x', 2699 - len);
+			buf[2699] = 0; /* About 155 MiB of line data in stress mode. */
+		}
+		assert(add_item(buf));
+	}
+	refill_list("");
+	assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 60000);
+	SendMessageW(list_hwnd, LB_SETCURSEL, 0, 0);
+	UpdateWindow(list_hwnd);
+	visit_location(-1); /* Empty history and both ends are no-ops. */
+	visit_location(1);
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
+	list_move(5);
+	list_move(5);
+	struct key_state ctrl = { true, false, false };
+	assert(handle_global_keys('O', ctrl));
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 5);
+	visit_location(-1);
+	visit_location(-1);
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
+	assert(handle_global_keys('I', ctrl));
+	visit_location(1);
+	visit_location(1);
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 10);
+	visit_location(-1);
+	list_move(2);
+	visit_location(1); /* A new move discards the old forward branch. */
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 7);
+	SendMessageW(list_hwnd, LB_SETCURSEL, 9, 0);
+	WndProc(main_hwnd, WM_COMMAND, MAKEWPARAM(ID_COMBO, LBN_SELCHANGE),
+	        (LPARAM)list_hwnd);
+	visit_location(-1);
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 7);
+	location_count = location_cursor = 0;
+	for (int i = 0; i < LOCATION_LIMIT + 2; ++i) record_location(i, i + 1);
+	assert(location_count == LOCATION_LIMIT
+	       && location_cursor == LOCATION_LIMIT - 1);
+	assert(locations[0].item == 3); /* Oldest positions drop off at the limit. */
+	for (int i = 0; i < location_count; ++i) free(locations[i].query);
+	location_count = location_cursor = 0;
+	list_move(-2);
+	list_move(5);
+	assert(add_item("extra-row"));
+	input_done = false;
+	WndProc(main_hwnd, WM_TIMER, TIMER_PROGRESS,
+	        0); /* Partial batch before EOF. */
+	input_done = true;
+	update_progress();
+	UpdateWindow(list_hwnd);
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 10);
+	assert(SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0) == 0);
+	assert(!painted_selected[5] && painted_selected[10]);
+	list_move(-5);
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 5);
+	assert(painted_selected[5] && !painted_selected[10]);
+	list_move(-5);
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
+	assert(painted_selected[0] && !painted_selected[5]);
+	SendMessageW(list_hwnd, LB_SETCURSEL, 59999, 0);
+	char *last = current_text();
+	assert(last && !strncmp(last, "item-59999", 10));
+	free(last);
+	refill_list("");
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 59999);
+	refill_list("item-1");
+	search_step();
+	assert(search_pos == SEARCH_BATCH);
+	assert(location_count > 0); /* Previous search is retained. */
+	int searches = location_count;
+	refill_list("item-12");
+	refill_list("item-123");
+	refill_list("item-1");
+	assert(location_count == searches); /* Editing one query is not four jumps. */
+	while (search_pos < 1024) search_step();
+	int old_item = matches[match_count - 1];
+	SendMessageW(list_hwnd, LB_SETCURSEL, match_count - 1, 0);
+	assert(SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0) > 0);
+	SetWindowTextW(input_hwnd, L"item-1");
+	SetWindowTextW(input_hwnd, L""); /* EN_CHANGE: clearing returns to the top. */
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
+	assert(SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0) == 0);
+	visit_location(-1);
+	assert(!strcmp(search_query, "item-1"));
+	search_step();
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == LB_ERR);
+	char *pending_text =
+	        current_text(); /* Enter must use the saved line, not row zero. */
+	assert(pending_text && !strcmp(pending_text, items[old_item]));
+	free(pending_text);
+	while (search_pos <= old_item) search_step();
+	assert(row_item((int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0)) == old_item);
+	visit_location(1);
+	assert(!strcmp(search_query, ""));
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
+	visit_location(-1);
+	search_step();
+	list_move(1); /* Manual navigation cancels a pending history restore. */
+	assert(pending_item == -1 && SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
+	visit_location(-1);
+	assert(pending_item == old_item
+	       && SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == LB_ERR);
+	refill_list("");
+	refill_list("item-1");
+	search_step();
+	refill_list("item-59999"); /* Cancel the previous search and start over. */
+	assert(progress_visible);
+	while (search_pos < item_count) search_step();
+	assert(match_count == 1 && matches[0] == 59999);
+	assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 1);
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
+	last = current_text();
+	assert(last && !strncmp(last, "item-59999", 10));
+	free(last);
+	assert(!progress_visible);
+	HDC screen = GetDC(NULL);
+	HDC dc = CreateCompatibleDC(screen);
+	HBITMAP bitmap = CreateCompatibleBitmap(screen, 250, 30);
+	HGDIOBJ old = SelectObject(dc, bitmap);
+	DRAWITEMSTRUCT draw = {0};
+	draw.CtlID = ID_COMBO;
+	draw.itemID = 0;
+	draw.itemState = ODS_SELECTED;
+	draw.hDC = dc;
+	draw.rcItem.right = 250;
+	draw.rcItem.bottom = 30;
+	assert(WndProc(main_hwnd, WM_DRAWITEM, ID_COMBO, (LPARAM)&draw) == TRUE);
+	assert(GetPixel(dc, 1, 1) == GetSysColor(COLOR_HIGHLIGHT));
+	SelectObject(dc, old);
+	DeleteObject(bitmap);
+	DeleteDC(dc);
+	ReleaseDC(NULL, screen);
+	refill_list("");
+	assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 60001);
+	ShowWindow(main_hwnd, SW_SHOWNOACTIVATE);
+	ShowWindow(list_hwnd, SW_SHOWNOACTIVATE);
+	UpdateWindow(list_hwnd);
+	assert(!GetUpdateRect(list_hwnd, NULL, FALSE));
+	SendMessageW(list_hwnd, LB_SETCURSEL, 59999, 0);
+	int kept_top = (int)SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0);
+	assert(add_item("item-60000"));
+	refill_list("");
+	assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 60002);
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 59999);
+	assert(SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0) == kept_top);
+	RECT dirty;
+	assert(!GetUpdateRect(list_hwnd, &dirty, FALSE) || IsRectEmpty(&dirty));
+	/* Count/scrollbar may update, but the existing client rows stay untouched. */
+	refill_list("tail-special");
+	search_step();
+	input_done = false;
+	assert(add_item("tail-special"));
+	while (search_pos < item_count) search_step();
+	assert(match_count == 1 && matches[0] == 60002);
+	input_done = true;
+	update_progress();
+	assert(SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) == 1);
+	assert(add_item("caf\xc3\xa9"));
+	SetWindowTextW(input_hwnd,
+	               L"\x00e9"); /* UTF-8 edit text goes through the search path. */
+	while (search_pos < loaded_count()) search_step();
+	assert(match_count == 1 && matches[0] == 60003);
+	add_selection();
+	assert(selected_count == 1 && !strcmp(selected[0], "caf\xc3\xa9"));
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == LB_ERR);
+	char *after_add = current_text();
+	assert(after_add && !*after_add); /* Enter would output only added rows. */
+	free(after_add);
+	list_move(1);
+	assert(SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) == 0);
+	DeleteFiber(search_fiber);
+	ConvertFiberToThread();
+	DestroyWindow(main_hwnd);
+	DeleteCriticalSection(&items_lock);
+	return 0;
 }

diff --git a/wmenu.c b/wmenu.c
@@ -1,15 +1,17 @@
+/* See LICENSE for license details. */
 #define UNICODE
 #define _UNICODE
-#include <windows.h>
-#include <commctrl.h>
+#include <io.h>
+#include <limits.h>
 #include <stdbool.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <io.h>
-#include <limits.h>
-#include <stdint.h>
 #include <wctype.h>
+#include <windows.h>
+/* commctrl.h requires windows.h first. */
+#include <commctrl.h>
 
 #include "arg.h"
 #ifdef _MSC_VER

@@ -37,12 +39,17 @@ static volatile LONG item_count; /* Published after items[] is populated. */
 static int item_capacity, selected_count;
 static int *matches, match_count, match_capacity, search_pos;
 static char *search_query;
-struct location { char *query; int item; }; /* Source item IDs survive filtering. */
+/* Source item IDs survive filtering. */
+struct location {
+	char *query;
+	int item;
+};
 static struct location locations[LOCATION_LIMIT];
 static int location_count, location_cursor, last_row = -1, pending_item = -1;
 static bool restoring_location, search_posted;
 static volatile LONG refresh_pending;
-static bool has_items, has_prompt, multi_select, vi_mode, normal_mode, default_controls, ignore_case;
+static bool has_items, has_prompt, multi_select, vi_mode, normal_mode,
+       default_controls, ignore_case;
 static wchar_t prompt[300];
 static HWND main_hwnd, input_hwnd, list_hwnd, progress_hwnd;
 static WNDPROC old_input_proc, old_list_proc;

@@ -54,874 +61,1133 @@ static UINT text_codepage = CP_UTF8;
 static wchar_t font_name[LF_FACESIZE];
 static HFONT ui_font;
 static bool custom_font;
-static bool center_window, close_on_blur, stdin_pipe, loading_items, input_done, progress_visible;
+static bool center_window, close_on_blur, stdin_pipe, loading_items,
+       input_done, progress_visible;
 static int progress_pos, progress_dir = 5;
 char *argv0;
 
-static wchar_t *widen(const char *s)
-{
-    int n = MultiByteToWideChar(text_codepage, 0, s ? s : "", -1, NULL, 0);
-    wchar_t *w = (wchar_t *)calloc(n ? n : 1, sizeof(wchar_t));
-    if (w) MultiByteToWideChar(text_codepage, 0, s ? s : "", -1, w, n);
-    return w;
-}
-
-static char *text_encoded(HWND hwnd)
-{
-    int n = GetWindowTextLengthW(hwnd) + 1;
-    wchar_t *w = (wchar_t *)calloc(n, sizeof(wchar_t));
-    char *s = NULL;
-    int m;
-    if (!w) return NULL;
-    GetWindowTextW(hwnd, w, n);
-    m = WideCharToMultiByte(text_codepage, 0, w, -1, NULL, 0, NULL, NULL);
-    s = (char *)calloc(m ? m : 1, 1);
-    if (s) WideCharToMultiByte(text_codepage, 0, w, -1, s, m, NULL, NULL);
-    free(w);
-    return s;
-}
-
-static int loaded_count(void)
-{
-    return (int)InterlockedCompareExchange(&item_count, 0, 0);
-}
-
-static bool add_item(const char *s)
-{
-    char *copy = _strdup(s ? s : "");
-    if (!copy) return false;
-    EnterCriticalSection(&items_lock);
-    if (item_count == item_capacity) {
-        if (item_capacity > INT_MAX / 2) {
-            LeaveCriticalSection(&items_lock);
-            free(copy);
-            return false;
-        }
-        int next = item_capacity ? item_capacity * 2 : 1024;
-        if ((size_t)next > SIZE_MAX / sizeof(*items)) {
-            LeaveCriticalSection(&items_lock);
-            free(copy);
-            return false;
-        }
-        char **grown = (char **)realloc(items, (size_t)next * sizeof(*items));
-        if (!grown) {
-            LeaveCriticalSection(&items_lock);
-            free(copy);
-            return false;
-        }
-        items = grown;
-        item_capacity = next;
-    }
-    items[item_count] = copy;
-    InterlockedIncrement(&item_count);
-    LeaveCriticalSection(&items_lock);
-    return true;
-}
-
-static void make_font(void)
-{
-    ui_font = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
-    if (custom_font) {
-        LOGFONTW lf;
-        HDC dc = GetDC(NULL);
-        GetObjectW(ui_font, sizeof lf, &lf);
-        if (font_name[0]) { wcsncpy(lf.lfFaceName, font_name, LF_FACESIZE - 1); lf.lfFaceName[LF_FACESIZE - 1] = 0; }
-        if (font_size > 0) lf.lfHeight = -MulDiv(font_size, GetDeviceCaps(dc, LOGPIXELSY), 72);
-        lf.lfWeight = font_weight;
-        ReleaseDC(NULL, dc);
-        ui_font = CreateFontIndirectW(&lf);
-    }
-}
-
-static void set_font(HWND hwnd)
-{
-    if (ui_font && hwnd) SendMessageW(hwnd, WM_SETFONT, (WPARAM)ui_font, TRUE);
-}
-
-/* Read one complete line, growing the buffer rather than splitting long rows. */
-static int read_line(FILE *stream, char **line, size_t *capacity)
-{
-    size_t len = 0;
-    for (;;) {
-        if (*capacity - len < 2) {
-            if (*capacity > INT_MAX / 2) return -1;
-            size_t next = *capacity ? *capacity * 2 : 4096;
-            char *grown = (char *)realloc(*line, next);
-            if (!grown) return -1;
-            *line = grown;
-            *capacity = next;
-        }
-        if (!fgets(*line + len, (int)(*capacity - len), stream)) {
-            if (ferror(stream)) return -1;
-            if (!len) return 0;
-            break;
-        }
-        len += strlen(*line + len);
-        if (len && (*line)[len - 1] == '\n') break;
-    }
-    if (len && (*line)[len - 1] == '\n') --len;
-    if (len && (*line)[len - 1] == '\r') --len;
-    (*line)[len] = 0;
-    return 1;
-}
-
-static DWORD WINAPI read_stdin_thread(void *unused)
-{
-    char *line = NULL;
-    size_t capacity = 0;
-    int n = 0, status;
-    (void)unused;
-    while ((status = read_line(stdin, &line, &capacity)) > 0) {
-        if (*line) {
-            if (!add_item(line)) { status = -1; break; }
-            if ((++n == 1 || n % CHUNK_LINES == 0) && !InterlockedExchange(&refresh_pending, 1))
-                PostMessageW(main_hwnd, WM_STDIN_CHUNK, 0, 0);
-        }
-    }
-    free(line);
-    PostMessageW(main_hwnd, WM_STDIN_DONE, status < 0, 0);
-    return 0;
-}
-
-/* fzy-style subsequence matching, with non-ASCII UTF-8 bytes compared literally. */
-static bool has_match(const char *query, const char *line)
-{
-    while (*query) {
-        unsigned char ch = (unsigned char)*query++;
-        if (ignore_case && ch >= 'A' && ch <= 'Z') ch = ch - 'A' + 'a';
-        unsigned char upper = ch >= 'a' && ch <= 'z' ? ch - 'a' + 'A' : ch;
-        while (*line && (unsigned char)*line != ch && (unsigned char)*line != upper) ++line;
-        if (!*line) return false;
-        ++line;
-    }
-    return true;
+static wchar_t *
+widen(const char *s)
+{
+	int n = MultiByteToWideChar(text_codepage, 0, s ? s : "", -1, NULL, 0);
+	wchar_t *w = (wchar_t *)calloc(n ? n : 1, sizeof(wchar_t));
+	if (w) MultiByteToWideChar(text_codepage, 0, s ? s : "", -1, w, n);
+	return w;
+}
+
+static char *
+text_encoded(HWND hwnd)
+{
+	int n = GetWindowTextLengthW(hwnd) + 1;
+	wchar_t *w = (wchar_t *)calloc(n, sizeof(wchar_t));
+	char *s = NULL;
+	int m;
+	if (!w) return NULL;
+	GetWindowTextW(hwnd, w, n);
+	m = WideCharToMultiByte(text_codepage, 0, w, -1, NULL, 0, NULL, NULL);
+	s = (char *)calloc(m ? m : 1, 1);
+	if (s) WideCharToMultiByte(text_codepage, 0, w, -1, s, m, NULL, NULL);
+	free(w);
+	return s;
+}
+
+static int
+loaded_count(void)
+{
+	return (int)InterlockedCompareExchange(&item_count, 0, 0);
+}
+
+static bool
+add_item(const char *s)
+{
+	char *copy = _strdup(s ? s : "");
+	if (!copy) return false;
+	EnterCriticalSection(&items_lock);
+	if (item_count == item_capacity) {
+		if (item_capacity > INT_MAX / 2) {
+			LeaveCriticalSection(&items_lock);
+			free(copy);
+			return false;
+		}
+		int next = item_capacity ? item_capacity * 2 : 1024;
+		if ((size_t)next > SIZE_MAX / sizeof(*items)) {
+			LeaveCriticalSection(&items_lock);
+			free(copy);
+			return false;
+		}
+		char **grown = (char **)realloc(items, (size_t)next * sizeof(*items));
+		if (!grown) {
+			LeaveCriticalSection(&items_lock);
+			free(copy);
+			return false;
+		}
+		items = grown;
+		item_capacity = next;
+	}
+	items[item_count] = copy;
+	InterlockedIncrement(&item_count);
+	LeaveCriticalSection(&items_lock);
+	return true;
+}
+
+static void
+make_font(void)
+{
+	ui_font = (HFONT)GetStockObject(DEFAULT_GUI_FONT);
+	if (custom_font) {
+		LOGFONTW lf;
+		HDC dc = GetDC(NULL);
+		GetObjectW(ui_font, sizeof lf, &lf);
+		if (font_name[0]) {
+			wcsncpy(lf.lfFaceName, font_name, LF_FACESIZE - 1);
+			lf.lfFaceName[LF_FACESIZE - 1] = 0;
+		}
+		if (font_size > 0) lf.lfHeight = -MulDiv(font_size, GetDeviceCaps(dc,
+			        LOGPIXELSY), 72);
+		lf.lfWeight = font_weight;
+		ReleaseDC(NULL, dc);
+		ui_font = CreateFontIndirectW(&lf);
+	}
+}
+
+static void
+set_font(HWND hwnd)
+{
+	if (ui_font && hwnd) SendMessageW(hwnd, WM_SETFONT, (WPARAM)ui_font, TRUE);
+}
+
+/* Read one complete line, growing the buffer instead of splitting rows. */
+static int
+read_line(FILE *stream, char **line, size_t *capacity)
+{
+	size_t len = 0;
+	for (;;) {
+		if (*capacity - len < 2) {
+			if (*capacity > INT_MAX / 2) return -1;
+			size_t next = *capacity ? *capacity * 2 : 4096;
+			char *grown = (char *)realloc(*line, next);
+			if (!grown) return -1;
+			*line = grown;
+			*capacity = next;
+		}
+		if (!fgets(*line + len, (int)(*capacity - len), stream)) {
+			if (ferror(stream)) return -1;
+			if (!len) return 0;
+			break;
+		}
+		len += strlen(*line + len);
+		if (len && (*line)[len - 1] == '\n') break;
+	}
+	if (len && (*line)[len - 1] == '\n') --len;
+	if (len && (*line)[len - 1] == '\r') --len;
+	(*line)[len] = 0;
+	return 1;
+}
+
+static DWORD WINAPI
+read_stdin_thread(void *unused)
+{
+	char *line = NULL;
+	size_t capacity = 0;
+	int n = 0, status;
+	(void)unused;
+	while ((status = read_line(stdin, &line, &capacity)) > 0) {
+		if (*line) {
+			if (!add_item(line)) {
+				status = -1;
+				break;
+			}
+			if ((++n == 1 || n % CHUNK_LINES == 0)
+			                && !InterlockedExchange(&refresh_pending, 1))
+				PostMessageW(main_hwnd, WM_STDIN_CHUNK, 0, 0);
+		}
+	}
+	free(line);
+	PostMessageW(main_hwnd, WM_STDIN_DONE, status < 0, 0);
+	return 0;
+}
+
+/* fzy-style subsequence matching; compare non-ASCII bytes literally. */
+static bool
+has_match(const char *query, const char *line)
+{
+	while (*query) {
+		unsigned char ch = (unsigned char) * query++;
+		if (ignore_case && ch >= 'A' && ch <= 'Z') ch = ch - 'A' + 'a';
+		unsigned char upper = ch >= 'a' && ch <= 'z' ? ch - 'a' + 'A' : ch;
+		while (*line && (unsigned char) * line != ch
+		                && (unsigned char) * line != upper) ++line;
+		if (!*line) return false;
+		++line;
+	}
+	return true;
 }
 
 /* The ListBox stores only a count. Its row IDs map into items or matches. */
-static int row_item(int row)
-{
-    if (row < 0) return -1;
-    if (search_query && *search_query)
-        return row < match_count ? matches[row] : -1;
-    return row < loaded_count() ? row : -1;
-}
-
-static void truncate_locations(void)
-{
-    for (int i = location_cursor + 1; i < location_count; ++i) free(locations[i].query);
-    if (location_count) location_count = location_cursor + 1;
-}
-
-static void push_location(const char *query, int item)
-{
-    char *copy = _strdup(query ? query : "");
-    if (!copy) return;
-    truncate_locations();
-    if (location_count == LOCATION_LIMIT) {
-        free(locations[0].query);
-        memmove(locations, locations + 1, (LOCATION_LIMIT - 1) * sizeof(*locations));
-        --location_count;
-    }
-    locations[location_count++] = (struct location){ copy, item };
-    location_cursor = location_count - 1;
-}
-
-static void record_location(int from, int to)
-{
-    if (to < 0 || from == to) return;
-    int new_item = row_item(to);
-    if (from < 0) {
-        if (!location_count || pending_item >= 0 ||
-            strcmp(locations[location_cursor].query, search_query ? search_query : ""))
-            push_location(search_query, new_item);
-        else locations[location_cursor].item = new_item;
-        return;
-    }
-    int old_item = row_item(from);
-    if (!location_count) push_location(search_query, old_item);
-    else if (!strcmp(locations[location_cursor].query, search_query ? search_query : "") &&
-             locations[location_cursor].item < 0)
-        locations[location_cursor].item = old_item;
-    else if (strcmp(locations[location_cursor].query, search_query ? search_query : "") ||
-             locations[location_cursor].item != old_item)
-        push_location(search_query, old_item);
-    push_location(search_query, new_item);
-}
-
-static void restore_location(void)
-{
-    if (pending_item < 0) return;
-    int row = pending_item;
-    if (search_query && *search_query) {
-        if (search_pos <= pending_item) return; /* Search has not reached this item. */
-        int lo = 0, hi = match_count;
-        while (lo < hi) {
-            int mid = lo + (hi - lo) / 2;
-            if (matches[mid] < pending_item) lo = mid + 1;
-            else hi = mid;
-        }
-        row = lo < match_count && matches[lo] == pending_item ? lo : -1;
-    }
-    pending_item = -1;
-    if (row >= 0 && row < SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0)) {
-        int previous = (int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0);
-        SendMessageW(list_hwnd, LB_SETCURSEL, row, 0);
-        last_row = row;
-        RECT rect;
-        if (previous >= 0 && SendMessageW(list_hwnd, LB_GETITEMRECT, previous, (LPARAM)&rect) != LB_ERR)
-            InvalidateRect(list_hwnd, &rect, FALSE);
-        if (SendMessageW(list_hwnd, LB_GETITEMRECT, row, (LPARAM)&rect) != LB_ERR)
-            InvalidateRect(list_hwnd, &rect, FALSE);
-        UpdateWindow(list_hwnd);
-    }
-}
-
-static void visit_location(int delta)
-{
-    int next = location_cursor + delta;
-    if (!list_hwnd || !location_count || next < 0 || next >= location_count) return;
-    wchar_t *query = widen(locations[next].query);
-    if (!query) return;
-    location_cursor = next;
-    pending_item = locations[next].item;
-    restoring_location = true;
-    SetWindowTextW(input_hwnd, query); /* EN_CHANGE starts the saved search. */
-    restoring_location = false;
-    free(query);
-    if (pending_item >= 0 && search_query && *search_query && search_pos <= pending_item) {
-        SendMessageW(list_hwnd, LB_SETCURSEL, -1, 0);
-        last_row = -1;
-        InvalidateRect(list_hwnd, NULL, FALSE);
-        UpdateWindow(list_hwnd);
-    }
-    restore_location();
-}
-
-static void update_count(void)
-{
-    int count = search_query && *search_query ? match_count : loaded_count();
-    int old_count = (int)SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0);
-    if (old_count == count) return;
-    int selected = (int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0);
-    int top = (int)SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0);
-    int height = (int)SendMessageW(list_hwnd, LB_GETITEMHEIGHT, 0, 0);
-    RECT client, pending;
-    bool had_pending = GetUpdateRect(list_hwnd, &pending, FALSE) && !IsRectEmpty(&pending);
-    GetClientRect(list_hwnd, &client);
-    SendMessageW(list_hwnd, WM_SETREDRAW, FALSE, 0);
-    SendMessageW(list_hwnd, LB_SETCOUNT, count, 0);
-    if (count) {
-        int wanted = pending_item >= 0 ? -1 : selected >= 0 && selected < count ? selected : 0;
-        SendMessageW(list_hwnd, LB_SETCURSEL, wanted, 0);
-        last_row = wanted;
-        if (top > 0 || SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0) != 0)
-            SendMessageW(list_hwnd, LB_SETTOPINDEX, top < count ? top : count - 1, 0);
-    }
-    SendMessageW(list_hwnd, WM_SETREDRAW, TRUE, 0);
-    /* LB_SETCOUNT may invalidate everything. Only newly visible rows need paint. */
-    RedrawWindow(list_hwnd, NULL, NULL, RDW_VALIDATE | RDW_NOCHILDREN);
-    int new_top = (int)SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0);
-    if (top != new_top || count < old_count || height <= 0) {
-        InvalidateRect(list_hwnd, NULL, FALSE);
-    } else if (old_count < new_top + (client.bottom - client.top + height - 1) / height) {
-        client.top += (old_count - new_top) * height;
-        if (client.top < 0) client.top = 0;
-        InvalidateRect(list_hwnd, &client, FALSE);
-    }
-    if (had_pending) InvalidateRect(list_hwnd, &pending, FALSE);
-    UpdateWindow(list_hwnd); /* Do not starve new rows or selection paints. */
-}
-
-static void update_progress(void)
-{
-    int count = loaded_count();
-    bool searching = input_done && search_query && *search_query && search_pos < count;
-    bool visible = !input_done || searching;
-    if (visible != progress_visible) {
-        ShowWindow(progress_hwnd, visible ? SW_SHOW : SW_HIDE);
-        SetWindowPos(list_hwnd, NULL, 0, S(28), win_w,
-                     win_h - S(28) - (visible ? S(10) : 0), SWP_NOZORDER);
-        progress_visible = visible;
-    }
-    if (searching)
-        SendMessageW(progress_hwnd, PBM_SETPOS,
-                     count ? (int)(100LL * search_pos / count) : 100, 0);
-}
-
-static void queue_search(void)
-{
-    if (!search_posted) search_posted = PostMessageW(main_hwnd, WM_SEARCH_STEP, 0, 0) != 0;
-}
-
-static VOID WINAPI search_fiber_run(void *unused)
-{
-    (void)unused;
-    for (;;) {
-        EnterCriticalSection(&items_lock);
-        int remaining = item_count - search_pos;
-        int end = search_pos + (remaining < SEARCH_BATCH ? remaining : SEARCH_BATCH);
-        for (; search_pos < end; ++search_pos) {
-            if (!has_match(search_query, items[search_pos])) continue;
-            if (match_count == match_capacity) {
-                if (match_capacity > INT_MAX / 2) { PostQuitMessage(1); search_pos = item_count; break; }
-                int next = match_capacity ? match_capacity * 2 : 1024;
-                if ((size_t)next > SIZE_MAX / sizeof(*matches)) { PostQuitMessage(1); search_pos = item_count; break; }
-                int *grown = (int *)realloc(matches, (size_t)next * sizeof(*matches));
-                if (!grown) { PostQuitMessage(1); search_pos = item_count; break; }
-                matches = grown;
-                match_capacity = next;
-            }
-            matches[match_count++] = search_pos;
-        }
-        LeaveCriticalSection(&items_lock);
-        SwitchToFiber(ui_fiber);  /* Never yield while holding items_lock. */
-    }
-}
-
-static void search_step(void)
-{
-    if (!search_query || !*search_query || search_pos >= loaded_count()) {
-        KillTimer(main_hwnd, TIMER_SEARCH);
-        return;
-    }
-    SwitchToFiber(search_fiber);
-    update_count();
-    restore_location();
-    update_progress();
-    if (search_pos >= loaded_count()) KillTimer(main_hwnd, TIMER_SEARCH);
-    else if (HIWORD(GetQueueStatus(QS_INPUT)))
-        SetTimer(main_hwnd, TIMER_SEARCH, 15, NULL); /* Let keyboard/mouse go first. */
-    else queue_search();
-}
-
-static void refill_list(const char *query)
-{
-    if (!query) return;
-    if (!search_query || strcmp(query, search_query)) {
-        char *copy = _strdup(query);
-        if (!copy) return;
-        if (!restoring_location) {
-            pending_item = -1;
-            if (search_query) {
-                int item = row_item((int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0));
-                if (!location_count) push_location(search_query, item);
-                else if (!strcmp(locations[location_cursor].query, search_query) && item >= 0)
-                    locations[location_cursor].item = item;
-                bool related = *query && *search_query && last_row <= 0 &&
-                    (!strncmp(query, search_query, strlen(query)) ||
-                     !strncmp(query, search_query, strlen(search_query)));
-                bool intermediate_empty = !*search_query && *query && last_row <= 0 &&
-                    location_count > 1 && !*locations[location_cursor].query;
-                if (related || intermediate_empty) {
-                    char *history_copy = _strdup(query);
-                    if (!history_copy) { free(copy); return; }
-                    truncate_locations();
-                    free(locations[location_cursor].query);
-                    locations[location_cursor] = (struct location){ history_copy, -1 };
-                } else push_location(query, -1);
-            }
-        }
-        free(search_query);
-        search_query = copy;
-        match_count = 0;
-        search_pos = 0;
-        KillTimer(main_hwnd, TIMER_SEARCH);
-        last_row = -1;
-        if (*search_query) SendMessageW(list_hwnd, LB_SETCOUNT, 0, 0);
-        else update_count();
-        SendMessageW(list_hwnd, LB_SETTOPINDEX, 0, 0);
-        if (SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) > 0) {
-            SendMessageW(list_hwnd, LB_SETCURSEL, 0, 0);
-            last_row = 0;
-        }
-        UpdateWindow(list_hwnd);
-        restore_location();
-    }
-    if (*search_query && search_pos < loaded_count()) queue_search();
-    else if (!*search_query) update_count();
-    if (progress_hwnd) update_progress();
-}
-
-static char *current_text(void)
-{
-    int sel = list_hwnd ? (int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) : -1;
-    if (has_items && (sel >= 0 || pending_item >= 0)) {
-        char *s = NULL;
-        EnterCriticalSection(&items_lock);
-        int index = pending_item >= 0 ? pending_item : row_item(sel);
-        if (index >= 0 && index < item_count) s = _strdup(items[index]);
-        LeaveCriticalSection(&items_lock);
-        return s;
-    }
-    return text_encoded(input_hwnd);
-}
-
-static void add_selection(void)
-{
-    char *s = current_text();
-    if (!s) { fputs("wmenu: out of memory selecting item\n", stderr); PostQuitMessage(1); return; }
-    if (!*s) { free(s); return; }
-    if (selected_count == INT_MAX || (size_t)(selected_count + 1) > SIZE_MAX / sizeof(*selected)) {
-        free(s);
-        fputs("wmenu: too many selections\n", stderr);
-        PostQuitMessage(1);
-        return;
-    }
-    char **grown = (char **)realloc(selected, sizeof(*selected) * (size_t)(selected_count + 1));
-    if (!grown) {
-        free(s);
-        fputs("wmenu: out of memory selecting item\n", stderr);
-        PostQuitMessage(1);
-        return;
-    }
-    selected = grown;
-    selected[selected_count++] = s;
-    SetWindowTextW(input_hwnd, L"");
-    if (has_items) {
-        refill_list("");
-        SendMessageW(list_hwnd, LB_SETCURSEL, -1, 0);
-        last_row = -1;
-        UpdateWindow(list_hwnd);
-    }
-}
-
-static void finish(void)
-{
-    char *s = input_hwnd ? current_text() : NULL;
-    if (input_hwnd && !s) { fputs("wmenu: out of memory accepting item\n", stderr); PostQuitMessage(1); return; }
-    for (int i = 0; i < selected_count; ++i) printf("%s\n", selected[i]);
-    if (s && *s) fputs(s, stdout);
-    free(s);
-    PostQuitMessage(0);
-}
-
-static void list_move(int delta)
-{
-    if (!has_items) return;
-    LRESULT count = SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0);
-    LRESULT cur = SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0);
-    LRESULT previous = cur;
-    if (count <= 0) return;
-    if (cur < 0) cur = delta > 0 ? -1 : count;
-    cur += delta;
-    if (cur < 0) cur = 0;
-    if (cur >= count) cur = count - 1;
-    if (cur == previous) return;
-    SendMessageW(list_hwnd, LB_SETCURSEL, cur, 0);
-    record_location((int)previous, (int)cur);
-    pending_item = -1;
-    last_row = (int)cur;
-    RECT rect;
-    if (previous >= 0 && SendMessageW(list_hwnd, LB_GETITEMRECT, previous, (LPARAM)&rect) != LB_ERR)
-        InvalidateRect(list_hwnd, &rect, FALSE);
-    if (SendMessageW(list_hwnd, LB_GETITEMRECT, cur, (LPARAM)&rect) != LB_ERR)
-        InvalidateRect(list_hwnd, &rect, FALSE);
-    UpdateWindow(list_hwnd);
-}
-
-static void edit_key(WORD key) { SendMessageW(input_hwnd, WM_KEYDOWN, key, 0); }
-
-static void move_caret(int pos)
-{
-    SendMessageW(input_hwnd, EM_SETSEL, pos, pos);
-}
-
-static bool at_start_unselected(HWND hwnd)
-{
-    DWORD start = 0, end = 0;
-    SendMessageW(hwnd, EM_GETSEL, (WPARAM)&start, (LPARAM)&end);
-    return start == 0 && end == 0;
-}
-
-static void delete_to_eol(void)
-{
-    DWORD start = 0, endsel = 0;
-    int end = GetWindowTextLengthW(input_hwnd);
-    SendMessageW(input_hwnd, EM_GETSEL, (WPARAM)&start, (LPARAM)&endsel);
-    SendMessageW(input_hwnd, EM_SETSEL, start, end);
-    edit_key(VK_DELETE);
-}
-
-static void delete_prev_word(void)
-{
-    DWORD start = 0, end = 0;
-    int len = GetWindowTextLengthW(input_hwnd);
-    wchar_t *s = (wchar_t *)calloc(len + 1, sizeof(wchar_t));
-    if (!s) return;
-    GetWindowTextW(input_hwnd, s, len + 1);
-    SendMessageW(input_hwnd, EM_GETSEL, (WPARAM)&start, (LPARAM)&end);
-    if (start != end) {
-        SendMessageW(input_hwnd, EM_REPLACESEL, TRUE, (LPARAM)L"");
-    } else if (start) {
-        int i = (int)start;
-        while (i > 0 && iswspace(s[i - 1])) --i;
-        while (i > 0 && !iswspace(s[i - 1])) --i;
-        SendMessageW(input_hwnd, EM_SETSEL, i, start);
-        SendMessageW(input_hwnd, EM_REPLACESEL, TRUE, (LPARAM)L"");
-    }
-    free(s);
-}
-
-struct key_state { bool ctrl, alt, shift; };
-
-static struct key_state key_state(void)
-{
-    struct key_state k = {
-        (GetKeyState(VK_CONTROL) & 0x8000) != 0,
-        (GetKeyState(VK_MENU) & 0x8000) != 0,
-        (GetKeyState(VK_SHIFT) & 0x8000) != 0,
-    };
-    return k;
-}
-
-static bool handle_global_keys(WORD key, struct key_state k)
-{
-    if (k.ctrl && key == 'O') { visit_location(-1); return true; }
-    if (k.ctrl && key == 'I') { visit_location(1); return true; }
-    if (k.ctrl && key == VK_RETURN && multi_select) { add_selection(); return true; }
-    if (key == VK_RETURN) { finish(); return true; }
-    if (key == VK_ESCAPE) {
-        if (vi_mode && !normal_mode) normal_mode = true;
-        else PostQuitMessage(0);
-        return true;
-    }
-    if (key == VK_DOWN) { list_move(1); return true; }
-    if (key == VK_UP) { list_move(-1); return true; }
-    return false;
-}
-
-/* Detachable mode: remove this function and its call for plain Windows controls. */
-static bool handle_emacs_keys(HWND hwnd, WORD key, struct key_state k)
-{
-    if (default_controls) return false;
-    if (k.ctrl && key == VK_BACK) { delete_prev_word(); return true; }
-    if (k.ctrl && key == 'A') { if (at_start_unselected(hwnd)) SendMessageW(hwnd, EM_SETSEL, 0, -1); else move_caret(0); return true; }
-    if (k.ctrl && key == 'E') { move_caret(GetWindowTextLengthW(hwnd)); return true; }
-    if (k.ctrl && key == 'K') { delete_to_eol(); return true; }
-    if (k.ctrl && key == 'W') { SendMessageW(hwnd, WM_CUT, 0, 0); return true; }
-    if (k.ctrl && k.alt && key == 'V') { vi_mode = !vi_mode; normal_mode = vi_mode; return true; }
-    if (k.ctrl && key == 'N') { list_move(1); return true; }
-    if (k.ctrl && key == 'P') { list_move(-1); return true; }
-    if (k.ctrl && key == 'D') { list_move(lines > 0 ? lines : 5); return true; }
-    if (k.ctrl && key == 'U') { list_move(-(lines > 0 ? lines : 5)); return true; }
-    return false;
-}
-
-/* Detachable mode: remove this function and Ctrl+Alt+V toggle for no vi support. */
-static bool handle_vi_keys(WORD key, struct key_state k)
-{
-    if (!vi_mode || !normal_mode) return false;
-    switch (key) {
-    case 'I': if (k.shift) edit_key(VK_HOME); normal_mode = false; return true;
-    case 'A': if (k.shift) edit_key(VK_END); else edit_key(VK_RIGHT); normal_mode = false; return true;
-    case 'H': edit_key(VK_LEFT); return true;
-    case 'L': edit_key(VK_RIGHT); return true;
-    case '0': edit_key(VK_HOME); return true;
-    case '4': if (k.shift) { edit_key(VK_END); return true; } break;
-    case 'X': if (k.shift) return true; edit_key(VK_DELETE); return true;
-    case 'D': if (k.shift) { delete_to_eol(); return true; } break;
-    case 'J': list_move(1); return true;
-    case 'K': list_move(-1); return true;
-    case 'G': {
-        int target = k.shift ? (int)SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) - 1 : 0;
-        if (target >= 0 && target < SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0)) {
-            SendMessageW(list_hwnd, LB_SETCURSEL, target, 0);
-            record_location(last_row, target);
-            pending_item = -1;
-            last_row = target;
-            UpdateWindow(list_hwnd);
-        }
-        return true;
-    }
-    case 'W': edit_key(VK_RIGHT); return true;
-    case 'B': edit_key(VK_LEFT); return true;
-    }
-    return false;
-}
-
-static LRESULT CALLBACK InputProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
-{
-    if (msg == WM_CHAR && ((vi_mode && normal_mode) || wp == 0x7f ||
-        ((GetKeyState(VK_CONTROL) & 0x8000) && (wp == 9 || wp == 15)))) return 0;
-    if (msg == WM_KEYDOWN) {
-        struct key_state k = key_state();
-        if (handle_global_keys((WORD)wp, k)) return 0;
-        if (handle_emacs_keys(hwnd, (WORD)wp, k)) return 0;
-        if (handle_vi_keys((WORD)wp, k)) return 0;
-    }
-    return CallWindowProcW(old_input_proc, hwnd, msg, wp, lp);
-}
-
-static LRESULT CALLBACK ListProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
-{
-    if (msg == WM_KEYDOWN) {
-        if (wp == VK_ESCAPE) { handle_global_keys(VK_ESCAPE, key_state()); return 0; }
-        if (wp == VK_RETURN) { finish(); return 0; }
-    }
-    LRESULT r = CallWindowProcW(old_list_proc, hwnd, msg, wp, lp);
-    if (msg == WM_SETFOCUS || msg == WM_LBUTTONDOWN || msg == WM_MOUSEWHEEL)
-        SetFocus(input_hwnd);
-    return r;
-}
-
-static LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
-{
-    switch (msg) {
-    case WM_STDIN_CHUNK:
-        InterlockedExchange(&refresh_pending, 0);
-        if (list_hwnd) {
-            char *q = text_encoded(input_hwnd);
-            if (q) refill_list(q);
-            free(q);
-        }
-        return 0;
-    case WM_STDIN_DONE:
-        if (wp) { fputs("wmenu: failed to read stdin (I/O or memory error)\n", stderr); PostQuitMessage(1); return 0; }
-        input_done = true;
-        has_items = loaded_count() > 0;
-        KillTimer(hwnd, TIMER_PROGRESS);
-        if (list_hwnd) {
-            char *q = text_encoded(input_hwnd);
-            if (q) refill_list(q);
-            free(q);
-            update_progress();
-        }
-        return 0;
-    case WM_SEARCH_STEP:
-        search_posted = false;
-        search_step();
-        return 0;
-    case WM_TIMER:
-        if (wp == TIMER_SEARCH) {
-            KillTimer(hwnd, TIMER_SEARCH);
-            if (!search_posted) search_step();
-            return 0;
-        }
-        if (wp == TIMER_PROGRESS && progress_hwnd && !input_done) {
-            if (list_hwnd) refill_list(search_query ? search_query : "");
-            progress_pos += progress_dir;
-            if (progress_pos >= 100 || progress_pos <= 0) progress_dir = -progress_dir;
-            SendMessageW(progress_hwnd, PBM_SETPOS, progress_pos, 0);
-        }
-        return 0;
-    case WM_MEASUREITEM: {
-        MEASUREITEMSTRUCT *measure = (MEASUREITEMSTRUCT *)lp;
-        if (measure->CtlID != ID_COMBO) break;
-        HDC dc = GetDC(hwnd);
-        HFONT old = (HFONT)SelectObject(dc, ui_font);
-        TEXTMETRICW tm;
-        GetTextMetricsW(dc, &tm);
-        SelectObject(dc, old);
-        ReleaseDC(hwnd, dc);
-        measure->itemHeight = tm.tmHeight + S(4);
-        return TRUE;
-    }
-    case WM_DRAWITEM: {
-        DRAWITEMSTRUCT *draw = (DRAWITEMSTRUCT *)lp;
-        if (draw->CtlID != ID_COMBO || draw->itemID == (UINT)-1) break;
-        bool selected_row = (int)draw->itemID == (int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0);
-        FillRect(draw->hDC, &draw->rcItem,
-                 GetSysColorBrush(selected_row ? COLOR_HIGHLIGHT : COLOR_WINDOW));
-        EnterCriticalSection(&items_lock);
-        int index = row_item((int)draw->itemID);
-        wchar_t *w = index >= 0 && index < item_count ? widen(items[index]) : NULL;
-        LeaveCriticalSection(&items_lock);
-        if (w) {
-            HFONT old = (HFONT)SelectObject(draw->hDC, ui_font);
-            SetBkMode(draw->hDC, TRANSPARENT);
-            SetTextColor(draw->hDC, GetSysColor(selected_row ? COLOR_HIGHLIGHTTEXT : COLOR_WINDOWTEXT));
-            RECT rect = draw->rcItem;
-            rect.left += S(4);
-            DrawTextW(draw->hDC, w, -1, &rect, DT_SINGLELINE | DT_VCENTER | DT_END_ELLIPSIS | DT_NOPREFIX);
-            SelectObject(draw->hDC, old);
-            free(w);
-        }
-        if (draw->itemState & ODS_FOCUS) DrawFocusRect(draw->hDC, &draw->rcItem);
-        return TRUE;
-    }
-    case WM_COMMAND:
-        if (LOWORD(wp) == ID_LABEL) return 0;
-        if (LOWORD(wp) == ID_EDIT && HIWORD(wp) == EN_CHANGE && has_items) {
-            char *q = text_encoded(input_hwnd);
-            refill_list(q);
-            free(q);
-        }
-        if (LOWORD(wp) == ID_COMBO && HIWORD(wp) == LBN_SELCHANGE) {
-            int row = (int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0);
-            record_location(last_row, row);
-            pending_item = -1;
-            last_row = row;
-        }
-        if (LOWORD(wp) == ID_COMBO && HIWORD(wp) == LBN_DBLCLK) {
-            if (multi_select) add_selection(); else finish();
-        }
-        return 0;
-    case WM_ACTIVATE:
-        if (close_on_blur && LOWORD(wp) == WA_INACTIVE) PostQuitMessage(0);
-        else if (LOWORD(wp) != WA_INACTIVE && input_hwnd) SetFocus(input_hwnd);
-        return 0;
-    case WM_ACTIVATEAPP:
-        if (close_on_blur && !wp) PostQuitMessage(0);
-        else if (wp && input_hwnd) SetFocus(input_hwnd);
-        return 0;
-    case WM_CLOSE:
-    case WM_DESTROY:
-        PostQuitMessage(0);
-        return 0;
-    }
-    return DefWindowProcW(hwnd, msg, wp, lp);
-}
-
-static int fit_lines(int requested, int screen_height)
-{
-    int row_height = S(22);
-    int fit = row_height > 0 && screen_height > S(28) ? (screen_height - S(28)) / row_height : 1;
-    if (fit < 1) fit = 1;
-    if (requested == -1) return fit;
-    if (requested < 1) requested = 5;
-    return requested < fit ? requested : fit;
-}
-
-static void usage(void)
-{
-    puts("usage: wmenu [-chimbdVv] [-e utf8|ansi|oem] [-p prompt] [-x px] [-y px] [-w px] [-l lines] [-fn name] [-fs pt] [-fw weight] < items");
-}
-
-int main(int argc, char **argv)
-{
-    HINSTANCE inst = GetModuleHandleW(NULL);
-    INITCOMMONCONTROLSEX icc = { sizeof icc, ICC_PROGRESS_CLASS };
-    WNDCLASSW wc = {0};
-    MSG msg;
-    int prompt_w = 0;
-
-    ARGBEGIN {
-    case 'h':
-        usage();
-        return 0;
-    case 'v':
-        puts("version: 0.8");
-        return 0;
-    case 'e': {
-        char *enc = EARGF(usage());
-        if (!strcmp(enc, "ansi")) text_codepage = CP_ACP;
-        else if (!strcmp(enc, "oem")) text_codepage = CP_OEMCP;
-        else if (!strcmp(enc, "utf8") || !strcmp(enc, "utf-8")) text_codepage = CP_UTF8;
-    } break;
-    case 'p': {
-        wchar_t *w = widen(EARGF(usage()));
-        if (!w) { fputs("wmenu: out of memory reading prompt\n", stderr); return 1; }
-        has_prompt = true;
-        wcsncpy(prompt, w, 299);
-        prompt[299] = 0;
-        free(w);
-    } break;
-    case 'f': {
-        wchar_t *w;
-        if (argv[0][1] == 'n') {
-            argv[0]++;
-            w = widen(EARGF(usage()));
-            if (!w) { fputs("wmenu: out of memory reading font name\n", stderr); return 1; }
-            custom_font = true;
-            wcsncpy(font_name, w, LF_FACESIZE - 1);
-            font_name[LF_FACESIZE - 1] = 0;
-            free(w);
-        } else if (argv[0][1] == 's') {
-            argv[0]++;
-            custom_font = true;
-            font_size = atoi(EARGF(usage()));
-        } else if (argv[0][1] == 'w') {
-            argv[0]++;
-            custom_font = true;
-            font_weight = atoi(EARGF(usage()));
-        }
-    } break;
-    case 'x': win_x = atoi(EARGF(usage())); break;
-    case 'y': win_y = atoi(EARGF(usage())); break;
-    case 'w': win_w = atoi(EARGF(usage())); break;
-    case 'l': lines = atoi(EARGF(usage())); break;
-    case 'c': center_window = true; break;
-    case 'm': multi_select = true; break;
-    case 'V': vi_mode = true; break;
-    case 'd': default_controls = true; break;
-    case 'b': close_on_blur = true; break;
-    case 'i': ignore_case = true; break;
-    default: usage(); return 1;
-    } ARGEND;
-
-    InitializeCriticalSection(&items_lock);
-    stdin_pipe = !_isatty(_fileno(stdin));
-    input_done = !stdin_pipe;
-    if (stdin_pipe) { has_items = true; loading_items = true; }
-
-    SetProcessDPIAware();
-    HDC screen = GetDC(NULL);
-    dpi = GetDeviceCaps(screen, LOGPIXELSX);
-    ReleaseDC(NULL, screen);
-    InitCommonControlsEx(&icc);
-    make_font();
-    if (!win_w) win_w = GetSystemMetrics(SM_CXSCREEN);
-    lines = fit_lines(lines, GetSystemMetrics(SM_CYSCREEN));
-    win_h = has_items ? S(28) + lines * S(22) : S(28);
-    if (center_window) {
-        win_x = (GetSystemMetrics(SM_CXSCREEN) - win_w) / 2;
-        win_y = (GetSystemMetrics(SM_CYSCREEN) - win_h) / 2;
-    }
-
-    wc.lpfnWndProc = WndProc;
-    wc.hInstance = inst;
-    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
-    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
-    wc.lpszClassName = L"wmenu";
-    if (!RegisterClassW(&wc)) return 1;
-
-    main_hwnd = CreateWindowExW(WS_EX_TOPMOST | WS_EX_APPWINDOW, L"wmenu", L"wmenu", WS_POPUP | WS_BORDER, win_x, win_y, win_w, win_h, NULL, NULL, inst, NULL);
-    if (!main_hwnd) return 1;
-
-    if (has_prompt) {
-        prompt_w = (int)wcslen(prompt) * S(8) + S(12);
-        HWND label = CreateWindowW(L"STATIC", prompt, WS_CHILD | WS_VISIBLE, S(4), S(5), prompt_w, S(22), main_hwnd, (HMENU)ID_LABEL, inst, NULL);
-        set_font(label);
-    }
-
-    if (has_items) {
-        input_hwnd = CreateWindowW(WC_EDITW, L"", WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL, prompt_w, S(2), win_w - prompt_w, S(24), main_hwnd, (HMENU)ID_EDIT, inst, NULL);
-        set_font(input_hwnd);
-        list_hwnd = CreateWindowW(WC_LISTBOXW, L"", WS_CHILD | WS_VISIBLE | WS_BORDER | LBS_NOTIFY | LBS_NODATA | LBS_OWNERDRAWFIXED | WS_VSCROLL, 0, S(28), win_w, win_h - S(28) - (loading_items ? S(10) : 0), main_hwnd, (HMENU)ID_COMBO, inst, NULL);
-        set_font(list_hwnd);
-        old_list_proc = (WNDPROC)SetWindowLongPtrW(list_hwnd, GWLP_WNDPROC, (LONG_PTR)ListProc);
-        progress_hwnd = CreateWindowW(PROGRESS_CLASSW, L"", WS_CHILD | (loading_items ? WS_VISIBLE : 0), 0, win_h - S(10), win_w, S(10), main_hwnd, (HMENU)ID_PROGRESS, inst, NULL);
-        progress_visible = loading_items;
-        SendMessageW(progress_hwnd, PBM_SETRANGE, 0, MAKELPARAM(0, 100));
-        if (!loading_items) refill_list("");
-    } else {
-        input_hwnd = CreateWindowW(WC_EDITW, L"", WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL, prompt_w, S(2), win_w - prompt_w, S(24), main_hwnd, (HMENU)ID_EDIT, inst, NULL);
-        set_font(input_hwnd);
-    }
-    old_input_proc = (WNDPROC)SetWindowLongPtrW(input_hwnd, GWLP_WNDPROC, (LONG_PTR)InputProc);
-    if (has_items) {
-        ui_fiber = ConvertThreadToFiber(NULL);
-        if (!ui_fiber) return 1;
-        search_fiber = CreateFiber(0, search_fiber_run, NULL);
-        if (!search_fiber) { ConvertFiberToThread(); return 1; }
-    }
-
-    ShowWindow(main_hwnd, SW_SHOW);
-    UpdateWindow(main_hwnd);
-    SetFocus(input_hwnd);
-    if (loading_items) {
-        SetTimer(main_hwnd, TIMER_PROGRESS, 30, NULL);
-        HANDLE reader = CreateThread(NULL, 0, read_stdin_thread, NULL, 0, NULL);
-        if (!reader) { fputs("wmenu: cannot start stdin reader\n", stderr); return 1; }
-        CloseHandle(reader);
-    }
-    while (GetMessageW(&msg, NULL, 0, 0) > 0) {
-        TranslateMessage(&msg);
-        DispatchMessageW(&msg);
-    }
-    if (search_fiber) {
-        DeleteFiber(search_fiber);
-        ConvertFiberToThread();
-    }
-    return (int)msg.wParam;
+static int
+row_item(int row)
+{
+	if (row < 0) return -1;
+	if (search_query && *search_query)
+		return row < match_count ? matches[row] : -1;
+	return row < loaded_count() ? row : -1;
+}
+
+static void
+truncate_locations(void)
+{
+	for (int i = location_cursor + 1; i < location_count;
+	                ++i) free(locations[i].query);
+	if (location_count) location_count = location_cursor + 1;
+}
+
+static void
+push_location(const char *query, int item)
+{
+	char *copy = _strdup(query ? query : "");
+	if (!copy) return;
+	truncate_locations();
+	if (location_count == LOCATION_LIMIT) {
+		free(locations[0].query);
+		memmove(locations, locations + 1, (LOCATION_LIMIT - 1) * sizeof(*locations));
+		--location_count;
+	}
+	locations[location_count++] = (struct location) {
+		copy, item
+	};
+	location_cursor = location_count - 1;
+}
+
+static void
+record_location(int from, int to)
+{
+	if (to < 0 || from == to) return;
+	int new_item = row_item(to);
+	if (from < 0) {
+		if (!location_count || pending_item >= 0 ||
+		                strcmp(locations[location_cursor].query, search_query ? search_query : ""))
+			push_location(search_query, new_item);
+		else locations[location_cursor].item = new_item;
+		return;
+	}
+	int old_item = row_item(from);
+	if (!location_count) push_location(search_query, old_item);
+	else if (!strcmp(locations[location_cursor].query,
+	                 search_query ? search_query : "") &&
+	                locations[location_cursor].item < 0)
+		locations[location_cursor].item = old_item;
+	else if (strcmp(locations[location_cursor].query,
+	                search_query ? search_query : "") ||
+	                locations[location_cursor].item != old_item)
+		push_location(search_query, old_item);
+	push_location(search_query, new_item);
+}
+
+static void
+restore_location(void)
+{
+	if (pending_item < 0) return;
+	int row = pending_item;
+	if (search_query && *search_query) {
+		if (search_pos <= pending_item) return; /* Search has not reached this item. */
+		int lo = 0, hi = match_count;
+		while (lo < hi) {
+			int mid = lo + (hi - lo) / 2;
+			if (matches[mid] < pending_item) lo = mid + 1;
+			else hi = mid;
+		}
+		row = lo < match_count && matches[lo] == pending_item ? lo : -1;
+	}
+	pending_item = -1;
+	if (row >= 0 && row < SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0)) {
+		int previous = (int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0);
+		SendMessageW(list_hwnd, LB_SETCURSEL, row, 0);
+		last_row = row;
+		RECT rect;
+		if (previous >= 0
+		                && SendMessageW(list_hwnd, LB_GETITEMRECT, previous, (LPARAM)&rect) != LB_ERR)
+			InvalidateRect(list_hwnd, &rect, FALSE);
+		if (SendMessageW(list_hwnd, LB_GETITEMRECT, row, (LPARAM)&rect) != LB_ERR)
+			InvalidateRect(list_hwnd, &rect, FALSE);
+		UpdateWindow(list_hwnd);
+	}
+}
+
+static void
+visit_location(int delta)
+{
+	int next = location_cursor + delta;
+	if (!list_hwnd || !location_count || next < 0
+	                || next >= location_count) return;
+	wchar_t *query = widen(locations[next].query);
+	if (!query) return;
+	location_cursor = next;
+	pending_item = locations[next].item;
+	restoring_location = true;
+	SetWindowTextW(input_hwnd, query); /* EN_CHANGE starts the saved search. */
+	restoring_location = false;
+	free(query);
+	if (pending_item >= 0 && search_query && *search_query
+	                && search_pos <= pending_item) {
+		SendMessageW(list_hwnd, LB_SETCURSEL, -1, 0);
+		last_row = -1;
+		InvalidateRect(list_hwnd, NULL, FALSE);
+		UpdateWindow(list_hwnd);
+	}
+	restore_location();
+}
+
+static void
+update_count(void)
+{
+	int count = search_query && *search_query ? match_count : loaded_count();
+	int old_count = (int)SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0);
+	if (old_count == count) return;
+	int selected = (int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0);
+	int top = (int)SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0);
+	int height = (int)SendMessageW(list_hwnd, LB_GETITEMHEIGHT, 0, 0);
+	RECT client, pending;
+	bool had_pending = GetUpdateRect(list_hwnd, &pending, FALSE)
+	                   && !IsRectEmpty(&pending);
+	GetClientRect(list_hwnd, &client);
+	SendMessageW(list_hwnd, WM_SETREDRAW, FALSE, 0);
+	SendMessageW(list_hwnd, LB_SETCOUNT, count, 0);
+	if (count) {
+		int wanted = pending_item >= 0 ? -1 : selected >= 0
+		             && selected < count ? selected : 0;
+		SendMessageW(list_hwnd, LB_SETCURSEL, wanted, 0);
+		last_row = wanted;
+		if (top > 0 || SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0) != 0)
+			SendMessageW(list_hwnd, LB_SETTOPINDEX, top < count ? top : count - 1, 0);
+	}
+	SendMessageW(list_hwnd, WM_SETREDRAW, TRUE, 0);
+	/* LB_SETCOUNT may invalidate everything; paint only new visible rows. */
+	RedrawWindow(list_hwnd, NULL, NULL, RDW_VALIDATE | RDW_NOCHILDREN);
+	int new_top = (int)SendMessageW(list_hwnd, LB_GETTOPINDEX, 0, 0);
+	if (top != new_top || count < old_count || height <= 0) {
+		InvalidateRect(list_hwnd, NULL, FALSE);
+	} else if (old_count < new_top + (client.bottom - client.top + height - 1) /
+	                height) {
+		client.top += (old_count - new_top) * height;
+		if (client.top < 0) client.top = 0;
+		InvalidateRect(list_hwnd, &client, FALSE);
+	}
+	if (had_pending) InvalidateRect(list_hwnd, &pending, FALSE);
+	UpdateWindow(list_hwnd); /* Do not starve new rows or selection paints. */
+}
+
+static void
+update_progress(void)
+{
+	int count = loaded_count();
+	bool searching = input_done && search_query && *search_query
+	                 && search_pos < count;
+	bool visible = !input_done || searching;
+	if (visible != progress_visible) {
+		ShowWindow(progress_hwnd, visible ? SW_SHOW : SW_HIDE);
+		SetWindowPos(list_hwnd, NULL, 0, S(28), win_w,
+		             win_h - S(28) - (visible ? S(10) : 0), SWP_NOZORDER);
+		progress_visible = visible;
+	}
+	if (searching)
+		SendMessageW(progress_hwnd, PBM_SETPOS,
+		             count ? (int)(100LL * search_pos / count) : 100, 0);
+}
+
+static void
+queue_search(void)
+{
+	if (!search_posted) search_posted = PostMessageW(main_hwnd, WM_SEARCH_STEP, 0,
+		        0) != 0;
+}
+
+static VOID WINAPI
+search_fiber_run(void *unused)
+{
+	(void)unused;
+	for (;;) {
+		EnterCriticalSection(&items_lock);
+		int remaining = item_count - search_pos;
+		int end = search_pos + (remaining < SEARCH_BATCH ? remaining : SEARCH_BATCH);
+		for (; search_pos < end; ++search_pos) {
+			if (!has_match(search_query, items[search_pos])) continue;
+			if (match_count == match_capacity) {
+				if (match_capacity > INT_MAX / 2) {
+					PostQuitMessage(1);
+					search_pos = item_count;
+					break;
+				}
+				int next = match_capacity ? match_capacity * 2 : 1024;
+				if ((size_t)next > SIZE_MAX / sizeof(*matches)) {
+					PostQuitMessage(1);
+					search_pos = item_count;
+					break;
+				}
+				int *grown = (int *)realloc(matches, (size_t)next * sizeof(*matches));
+				if (!grown) {
+					PostQuitMessage(1);
+					search_pos = item_count;
+					break;
+				}
+				matches = grown;
+				match_capacity = next;
+			}
+			matches[match_count++] = search_pos;
+		}
+		LeaveCriticalSection(&items_lock);
+		SwitchToFiber(ui_fiber);  /* Never yield while holding items_lock. */
+	}
+}
+
+static void
+search_step(void)
+{
+	if (!search_query || !*search_query || search_pos >= loaded_count()) {
+		KillTimer(main_hwnd, TIMER_SEARCH);
+		return;
+	}
+	SwitchToFiber(search_fiber);
+	update_count();
+	restore_location();
+	update_progress();
+	if (search_pos >= loaded_count()) KillTimer(main_hwnd, TIMER_SEARCH);
+	else if (HIWORD(GetQueueStatus(QS_INPUT)))
+		SetTimer(main_hwnd, TIMER_SEARCH, 15, NULL); /* Let keyboard/mouse go first. */
+	else queue_search();
+}
+
+static void
+refill_list(const char *query)
+{
+	if (!query) return;
+	if (!search_query || strcmp(query, search_query)) {
+		char *copy = _strdup(query);
+		if (!copy) return;
+		if (!restoring_location) {
+			pending_item = -1;
+			if (search_query) {
+				int item = row_item((int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0));
+				if (!location_count) push_location(search_query, item);
+				else if (!strcmp(locations[location_cursor].query, search_query) && item >= 0)
+					locations[location_cursor].item = item;
+				bool related = *query && *search_query && last_row <= 0 &&
+				               (!strncmp(query, search_query, strlen(query)) ||
+				                !strncmp(query, search_query, strlen(search_query)));
+				bool intermediate_empty = !*search_query && *query && last_row <= 0 &&
+				                          location_count > 1 && !*locations[location_cursor].query;
+				if (related || intermediate_empty) {
+					char *history_copy = _strdup(query);
+					if (!history_copy) {
+						free(copy);
+						return;
+					}
+					truncate_locations();
+					free(locations[location_cursor].query);
+					locations[location_cursor] = (struct location) {
+						history_copy, -1
+					};
+				} else push_location(query, -1);
+			}
+		}
+		free(search_query);
+		search_query = copy;
+		match_count = 0;
+		search_pos = 0;
+		KillTimer(main_hwnd, TIMER_SEARCH);
+		last_row = -1;
+		if (*search_query) SendMessageW(list_hwnd, LB_SETCOUNT, 0, 0);
+		else update_count();
+		SendMessageW(list_hwnd, LB_SETTOPINDEX, 0, 0);
+		if (SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) > 0) {
+			SendMessageW(list_hwnd, LB_SETCURSEL, 0, 0);
+			last_row = 0;
+		}
+		UpdateWindow(list_hwnd);
+		restore_location();
+	}
+	if (*search_query && search_pos < loaded_count()) queue_search();
+	else if (!*search_query) update_count();
+	if (progress_hwnd) update_progress();
+}
+
+static char *
+current_text(void)
+{
+	int sel = list_hwnd ? (int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0) : -1;
+	if (has_items && (sel >= 0 || pending_item >= 0)) {
+		char *s = NULL;
+		EnterCriticalSection(&items_lock);
+		int index = pending_item >= 0 ? pending_item : row_item(sel);
+		if (index >= 0 && index < item_count) s = _strdup(items[index]);
+		LeaveCriticalSection(&items_lock);
+		return s;
+	}
+	return text_encoded(input_hwnd);
+}
+
+static void
+add_selection(void)
+{
+	char *s = current_text();
+	if (!s) {
+		fputs("wmenu: out of memory selecting item\n", stderr);
+		PostQuitMessage(1);
+		return;
+	}
+	if (!*s) {
+		free(s);
+		return;
+	}
+	if (selected_count == INT_MAX
+	                || (size_t)(selected_count + 1) > SIZE_MAX / sizeof(*selected)) {
+		free(s);
+		fputs("wmenu: too many selections\n", stderr);
+		PostQuitMessage(1);
+		return;
+	}
+	char **grown = (char **)realloc(selected,
+	                                sizeof(*selected) * (size_t)(selected_count + 1));
+	if (!grown) {
+		free(s);
+		fputs("wmenu: out of memory selecting item\n", stderr);
+		PostQuitMessage(1);
+		return;
+	}
+	selected = grown;
+	selected[selected_count++] = s;
+	SetWindowTextW(input_hwnd, L"");
+	if (has_items) {
+		refill_list("");
+		SendMessageW(list_hwnd, LB_SETCURSEL, -1, 0);
+		last_row = -1;
+		UpdateWindow(list_hwnd);
+	}
+}
+
+static void
+finish(void)
+{
+	char *s = input_hwnd ? current_text() : NULL;
+	if (input_hwnd && !s) {
+		fputs("wmenu: out of memory accepting item\n", stderr);
+		PostQuitMessage(1);
+		return;
+	}
+	for (int i = 0; i < selected_count; ++i) printf("%s\n", selected[i]);
+	if (s && *s) fputs(s, stdout);
+	free(s);
+	PostQuitMessage(0);
+}
+
+static void
+list_move(int delta)
+{
+	if (!has_items) return;
+	LRESULT count = SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0);
+	LRESULT cur = SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0);
+	LRESULT previous = cur;
+	if (count <= 0) return;
+	if (cur < 0) cur = delta > 0 ? -1 : count;
+	cur += delta;
+	if (cur < 0) cur = 0;
+	if (cur >= count) cur = count - 1;
+	if (cur == previous) return;
+	SendMessageW(list_hwnd, LB_SETCURSEL, cur, 0);
+	record_location((int)previous, (int)cur);
+	pending_item = -1;
+	last_row = (int)cur;
+	RECT rect;
+	if (previous >= 0
+	                && SendMessageW(list_hwnd, LB_GETITEMRECT, previous, (LPARAM)&rect) != LB_ERR)
+		InvalidateRect(list_hwnd, &rect, FALSE);
+	if (SendMessageW(list_hwnd, LB_GETITEMRECT, cur, (LPARAM)&rect) != LB_ERR)
+		InvalidateRect(list_hwnd, &rect, FALSE);
+	UpdateWindow(list_hwnd);
+}
+
+static void
+edit_key(WORD key)
+{
+	SendMessageW(input_hwnd, WM_KEYDOWN, key, 0);
+}
+
+static void
+move_caret(int pos)
+{
+	SendMessageW(input_hwnd, EM_SETSEL, pos, pos);
+}
+
+static bool
+at_start_unselected(HWND hwnd)
+{
+	DWORD start = 0, end = 0;
+	SendMessageW(hwnd, EM_GETSEL, (WPARAM)&start, (LPARAM)&end);
+	return start == 0 && end == 0;
+}
+
+static void
+delete_to_eol(void)
+{
+	DWORD start = 0, endsel = 0;
+	int end = GetWindowTextLengthW(input_hwnd);
+	SendMessageW(input_hwnd, EM_GETSEL, (WPARAM)&start, (LPARAM)&endsel);
+	SendMessageW(input_hwnd, EM_SETSEL, start, end);
+	edit_key(VK_DELETE);
+}
+
+static void
+delete_prev_word(void)
+{
+	DWORD start = 0, end = 0;
+	int len = GetWindowTextLengthW(input_hwnd);
+	wchar_t *s = (wchar_t *)calloc(len + 1, sizeof(wchar_t));
+	if (!s) return;
+	GetWindowTextW(input_hwnd, s, len + 1);
+	SendMessageW(input_hwnd, EM_GETSEL, (WPARAM)&start, (LPARAM)&end);
+	if (start != end) {
+		SendMessageW(input_hwnd, EM_REPLACESEL, TRUE, (LPARAM)L"");
+	} else if (start) {
+		int i = (int)start;
+		while (i > 0 && iswspace(s[i - 1])) --i;
+		while (i > 0 && !iswspace(s[i - 1])) --i;
+		SendMessageW(input_hwnd, EM_SETSEL, i, start);
+		SendMessageW(input_hwnd, EM_REPLACESEL, TRUE, (LPARAM)L"");
+	}
+	free(s);
+}
+
+struct key_state {
+	bool ctrl, alt, shift;
+};
+
+static struct key_state
+key_state(void)
+{
+	struct key_state k = {
+		(GetKeyState(VK_CONTROL) & 0x8000) != 0,
+		(GetKeyState(VK_MENU) & 0x8000) != 0,
+		(GetKeyState(VK_SHIFT) & 0x8000) != 0,
+	};
+	return k;
+}
+
+static bool
+handle_global_keys(WORD key, struct key_state k)
+{
+	if (k.ctrl && key == 'O') {
+		visit_location(-1);
+		return true;
+	}
+	if (k.ctrl && key == 'I') {
+		visit_location(1);
+		return true;
+	}
+	if (k.ctrl && key == VK_RETURN && multi_select) {
+		add_selection();
+		return true;
+	}
+	if (key == VK_RETURN) {
+		finish();
+		return true;
+	}
+	if (key == VK_ESCAPE) {
+		if (vi_mode && !normal_mode) normal_mode = true;
+		else PostQuitMessage(0);
+		return true;
+	}
+	if (key == VK_DOWN) {
+		list_move(1);
+		return true;
+	}
+	if (key == VK_UP) {
+		list_move(-1);
+		return true;
+	}
+	return false;
+}
+
+/* Detachable mode: remove this and its call for plain Windows controls. */
+static bool
+handle_emacs_keys(HWND hwnd, WORD key, struct key_state k)
+{
+	if (default_controls) return false;
+	if (k.ctrl && key == VK_BACK) {
+		delete_prev_word();
+		return true;
+	}
+	if (k.ctrl && key == 'A') {
+		if (at_start_unselected(hwnd)) SendMessageW(hwnd, EM_SETSEL, 0, -1);
+		else move_caret(0);
+		return true;
+	}
+	if (k.ctrl && key == 'E') {
+		move_caret(GetWindowTextLengthW(hwnd));
+		return true;
+	}
+	if (k.ctrl && key == 'K') {
+		delete_to_eol();
+		return true;
+	}
+	if (k.ctrl && key == 'W') {
+		SendMessageW(hwnd, WM_CUT, 0, 0);
+		return true;
+	}
+	if (k.ctrl && k.alt && key == 'V') {
+		vi_mode = !vi_mode;
+		normal_mode = vi_mode;
+		return true;
+	}
+	if (k.ctrl && key == 'N') {
+		list_move(1);
+		return true;
+	}
+	if (k.ctrl && key == 'P') {
+		list_move(-1);
+		return true;
+	}
+	if (k.ctrl && key == 'D') {
+		list_move(lines > 0 ? lines : 5);
+		return true;
+	}
+	if (k.ctrl && key == 'U') {
+		list_move(-(lines > 0 ? lines : 5));
+		return true;
+	}
+	return false;
+}
+
+/* Detachable mode: remove this and Ctrl+Alt+V for no vi support. */
+static bool
+handle_vi_keys(WORD key, struct key_state k)
+{
+	if (!vi_mode || !normal_mode) return false;
+	switch (key) {
+	case 'I':
+		if (k.shift) edit_key(VK_HOME);
+		normal_mode = false;
+		return true;
+	case 'A':
+		if (k.shift) edit_key(VK_END);
+		else edit_key(VK_RIGHT);
+		normal_mode = false;
+		return true;
+	case 'H':
+		edit_key(VK_LEFT);
+		return true;
+	case 'L':
+		edit_key(VK_RIGHT);
+		return true;
+	case '0':
+		edit_key(VK_HOME);
+		return true;
+	case '4':
+		if (k.shift) {
+			edit_key(VK_END);
+			return true;
+		}
+		break;
+	case 'X':
+		if (k.shift) return true;
+		edit_key(VK_DELETE);
+		return true;
+	case 'D':
+		if (k.shift) {
+			delete_to_eol();
+			return true;
+		}
+		break;
+	case 'J':
+		list_move(1);
+		return true;
+	case 'K':
+		list_move(-1);
+		return true;
+	case 'G': {
+		int target = k.shift ? (int)SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0) - 1 : 0;
+		if (target >= 0 && target < SendMessageW(list_hwnd, LB_GETCOUNT, 0, 0)) {
+			SendMessageW(list_hwnd, LB_SETCURSEL, target, 0);
+			record_location(last_row, target);
+			pending_item = -1;
+			last_row = target;
+			UpdateWindow(list_hwnd);
+		}
+		return true;
+	}
+	case 'W':
+		edit_key(VK_RIGHT);
+		return true;
+	case 'B':
+		edit_key(VK_LEFT);
+		return true;
+	}
+	return false;
+}
+
+static LRESULT CALLBACK
+InputProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
+{
+	if (msg == WM_CHAR && ((vi_mode && normal_mode) || wp == 0x7f ||
+	                       ((GetKeyState(VK_CONTROL) & 0x8000) && (wp == 9 || wp == 15)))) return 0;
+	if (msg == WM_KEYDOWN) {
+		struct key_state k = key_state();
+		if (handle_global_keys((WORD)wp, k)) return 0;
+		if (handle_emacs_keys(hwnd, (WORD)wp, k)) return 0;
+		if (handle_vi_keys((WORD)wp, k)) return 0;
+	}
+	return CallWindowProcW(old_input_proc, hwnd, msg, wp, lp);
+}
+
+static LRESULT CALLBACK
+ListProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
+{
+	if (msg == WM_KEYDOWN) {
+		if (wp == VK_ESCAPE) {
+			handle_global_keys(VK_ESCAPE, key_state());
+			return 0;
+		}
+		if (wp == VK_RETURN) {
+			finish();
+			return 0;
+		}
+	}
+	LRESULT r = CallWindowProcW(old_list_proc, hwnd, msg, wp, lp);
+	if (msg == WM_SETFOCUS || msg == WM_LBUTTONDOWN || msg == WM_MOUSEWHEEL)
+		SetFocus(input_hwnd);
+	return r;
+}
+
+static LRESULT CALLBACK
+WndProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
+{
+	switch (msg) {
+	case WM_STDIN_CHUNK:
+		InterlockedExchange(&refresh_pending, 0);
+		if (list_hwnd) {
+			char *q = text_encoded(input_hwnd);
+			if (q) refill_list(q);
+			free(q);
+		}
+		return 0;
+	case WM_STDIN_DONE:
+		if (wp) {
+			fputs("wmenu: failed to read stdin (I/O or memory error)\n", stderr);
+			PostQuitMessage(1);
+			return 0;
+		}
+		input_done = true;
+		has_items = loaded_count() > 0;
+		KillTimer(hwnd, TIMER_PROGRESS);
+		if (list_hwnd) {
+			char *q = text_encoded(input_hwnd);
+			if (q) refill_list(q);
+			free(q);
+			update_progress();
+		}
+		return 0;
+	case WM_SEARCH_STEP:
+		search_posted = false;
+		search_step();
+		return 0;
+	case WM_TIMER:
+		if (wp == TIMER_SEARCH) {
+			KillTimer(hwnd, TIMER_SEARCH);
+			if (!search_posted) search_step();
+			return 0;
+		}
+		if (wp == TIMER_PROGRESS && progress_hwnd && !input_done) {
+			if (list_hwnd) refill_list(search_query ? search_query : "");
+			progress_pos += progress_dir;
+			if (progress_pos >= 100 || progress_pos <= 0) progress_dir = -progress_dir;
+			SendMessageW(progress_hwnd, PBM_SETPOS, progress_pos, 0);
+		}
+		return 0;
+	case WM_MEASUREITEM: {
+		MEASUREITEMSTRUCT *measure = (MEASUREITEMSTRUCT *)lp;
+		if (measure->CtlID != ID_COMBO) break;
+		HDC dc = GetDC(hwnd);
+		HFONT old = (HFONT)SelectObject(dc, ui_font);
+		TEXTMETRICW tm;
+		GetTextMetricsW(dc, &tm);
+		SelectObject(dc, old);
+		ReleaseDC(hwnd, dc);
+		measure->itemHeight = tm.tmHeight + S(4);
+		return TRUE;
+	}
+	case WM_DRAWITEM: {
+		DRAWITEMSTRUCT *draw = (DRAWITEMSTRUCT *)lp;
+		if (draw->CtlID != ID_COMBO || draw->itemID == (UINT) -1) break;
+		bool selected_row = (int)draw->itemID == (int)SendMessageW(list_hwnd,
+		        LB_GETCURSEL, 0, 0);
+		FillRect(draw->hDC, &draw->rcItem,
+		         GetSysColorBrush(selected_row ? COLOR_HIGHLIGHT : COLOR_WINDOW));
+		EnterCriticalSection(&items_lock);
+		int index = row_item((int)draw->itemID);
+		wchar_t *w = index >= 0 && index < item_count ? widen(items[index]) : NULL;
+		LeaveCriticalSection(&items_lock);
+		if (w) {
+			HFONT old = (HFONT)SelectObject(draw->hDC, ui_font);
+			SetBkMode(draw->hDC, TRANSPARENT);
+			SetTextColor(draw->hDC, GetSysColor(selected_row ? COLOR_HIGHLIGHTTEXT :
+			                                    COLOR_WINDOWTEXT));
+			RECT rect = draw->rcItem;
+			rect.left += S(4);
+			DrawTextW(draw->hDC, w, -1, &rect,
+			          DT_SINGLELINE | DT_VCENTER | DT_END_ELLIPSIS | DT_NOPREFIX);
+			SelectObject(draw->hDC, old);
+			free(w);
+		}
+		if (draw->itemState & ODS_FOCUS) DrawFocusRect(draw->hDC, &draw->rcItem);
+		return TRUE;
+	}
+	case WM_COMMAND:
+		if (LOWORD(wp) == ID_LABEL) return 0;
+		if (LOWORD(wp) == ID_EDIT && HIWORD(wp) == EN_CHANGE && has_items) {
+			char *q = text_encoded(input_hwnd);
+			refill_list(q);
+			free(q);
+		}
+		if (LOWORD(wp) == ID_COMBO && HIWORD(wp) == LBN_SELCHANGE) {
+			int row = (int)SendMessageW(list_hwnd, LB_GETCURSEL, 0, 0);
+			record_location(last_row, row);
+			pending_item = -1;
+			last_row = row;
+		}
+		if (LOWORD(wp) == ID_COMBO && HIWORD(wp) == LBN_DBLCLK) {
+			if (multi_select) add_selection();
+			else finish();
+		}
+		return 0;
+	case WM_ACTIVATE:
+		if (close_on_blur && LOWORD(wp) == WA_INACTIVE) PostQuitMessage(0);
+		else if (LOWORD(wp) != WA_INACTIVE && input_hwnd) SetFocus(input_hwnd);
+		return 0;
+	case WM_ACTIVATEAPP:
+		if (close_on_blur && !wp) PostQuitMessage(0);
+		else if (wp && input_hwnd) SetFocus(input_hwnd);
+		return 0;
+	case WM_CLOSE:
+	case WM_DESTROY:
+		PostQuitMessage(0);
+		return 0;
+	}
+	return DefWindowProcW(hwnd, msg, wp, lp);
+}
+
+static int
+fit_lines(int requested, int screen_height)
+{
+	int row_height = S(22);
+	int fit = row_height > 0
+	          && screen_height > S(28) ? (screen_height - S(28)) / row_height : 1;
+	if (fit < 1) fit = 1;
+	if (requested == -1) return fit;
+	if (requested < 1) requested = 5;
+	return requested < fit ? requested : fit;
+}
+
+static void
+usage(void)
+{
+	puts("usage: wmenu [-chimbdVv] [-e utf8|ansi|oem] [-p prompt] "
+	     "[-x px] [-y px] [-w px] [-l lines] "
+	     "[-fn name] [-fs pt] [-fw weight] < items");
+}
+
+int
+main(int argc, char **argv)
+{
+	HINSTANCE inst = GetModuleHandleW(NULL);
+	INITCOMMONCONTROLSEX icc = { sizeof icc, ICC_PROGRESS_CLASS };
+	WNDCLASSW wc = {0};
+	MSG msg;
+	int prompt_w = 0;
+
+	ARGBEGIN {
+	case 'h':
+		usage();
+		return 0;
+	case 'v':
+		puts("version: 0.8");
+		return 0;
+	case 'e':
+		{
+			char *enc = EARGF(usage());
+			if (!strcmp(enc, "ansi")) text_codepage = CP_ACP;
+			else if (!strcmp(enc, "oem")) text_codepage = CP_OEMCP;
+			else if (!strcmp(enc, "utf8")
+			                || !strcmp(enc, "utf-8")) text_codepage = CP_UTF8;
+		}
+		break;
+	case 'p':
+		{
+			wchar_t *w = widen(EARGF(usage()));
+			if (!w) {
+				fputs("wmenu: out of memory reading prompt\n", stderr);
+				return 1;
+			}
+			has_prompt = true;
+			wcsncpy(prompt, w, 299);
+			prompt[299] = 0;
+			free(w);
+		}
+		break;
+	case 'f':
+		{
+			wchar_t *w;
+			if (argv[0][1] == 'n') {
+				argv[0]++;
+				w = widen(EARGF(usage()));
+				if (!w) {
+					fputs("wmenu: out of memory reading font name\n", stderr);
+					return 1;
+				}
+				custom_font = true;
+				wcsncpy(font_name, w, LF_FACESIZE - 1);
+				font_name[LF_FACESIZE - 1] = 0;
+				free(w);
+			} else if (argv[0][1] == 's') {
+				argv[0]++;
+				custom_font = true;
+				font_size = atoi(EARGF(usage()));
+			} else if (argv[0][1] == 'w') {
+				argv[0]++;
+				custom_font = true;
+				font_weight = atoi(EARGF(usage()));
+			}
+		}
+		break;
+	case 'x':
+		win_x = atoi(EARGF(usage()));
+		break;
+	case 'y':
+		win_y = atoi(EARGF(usage()));
+		break;
+	case 'w':
+		win_w = atoi(EARGF(usage()));
+		break;
+	case 'l':
+		lines = atoi(EARGF(usage()));
+		break;
+	case 'c':
+		center_window = true;
+		break;
+	case 'm':
+		multi_select = true;
+		break;
+	case 'V':
+		vi_mode = true;
+		break;
+	case 'd':
+		default_controls = true;
+		break;
+	case 'b':
+		close_on_blur = true;
+		break;
+	case 'i':
+		ignore_case = true;
+		break;
+	default:
+		usage();
+		return 1;
+	} ARGEND;
+
+	InitializeCriticalSection(&items_lock);
+	stdin_pipe = !_isatty(_fileno(stdin));
+	input_done = !stdin_pipe;
+	if (stdin_pipe) {
+		has_items = true;
+		loading_items = true;
+	}
+
+	SetProcessDPIAware();
+	HDC screen = GetDC(NULL);
+	dpi = GetDeviceCaps(screen, LOGPIXELSX);
+	ReleaseDC(NULL, screen);
+	InitCommonControlsEx(&icc);
+	make_font();
+	if (!win_w) win_w = GetSystemMetrics(SM_CXSCREEN);
+	lines = fit_lines(lines, GetSystemMetrics(SM_CYSCREEN));
+	win_h = has_items ? S(28) + lines * S(22) : S(28);
+	if (center_window) {
+		win_x = (GetSystemMetrics(SM_CXSCREEN) - win_w) / 2;
+		win_y = (GetSystemMetrics(SM_CYSCREEN) - win_h) / 2;
+	}
+
+	wc.lpfnWndProc = WndProc;
+	wc.hInstance = inst;
+	wc.hCursor = LoadCursor(NULL, IDC_ARROW);
+	wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
+	wc.lpszClassName = L"wmenu";
+	if (!RegisterClassW(&wc)) return 1;
+
+	main_hwnd = CreateWindowExW(WS_EX_TOPMOST | WS_EX_APPWINDOW, L"wmenu",
+	                            L"wmenu", WS_POPUP | WS_BORDER, win_x, win_y, win_w, win_h, NULL, NULL, inst,
+	                            NULL);
+	if (!main_hwnd) return 1;
+
+	if (has_prompt) {
+		prompt_w = (int)wcslen(prompt) * S(8) + S(12);
+		HWND label = CreateWindowW(L"STATIC", prompt, WS_CHILD | WS_VISIBLE, S(4),
+		                           S(5), prompt_w, S(22), main_hwnd, (HMENU)ID_LABEL, inst, NULL);
+		set_font(label);
+	}
+
+	if (has_items) {
+		input_hwnd = CreateWindowW(WC_EDITW, L"",
+		                           WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL, prompt_w, S(2),
+		                           win_w - prompt_w, S(24), main_hwnd, (HMENU)ID_EDIT, inst, NULL);
+		set_font(input_hwnd);
+		list_hwnd = CreateWindowW(WC_LISTBOXW, L"",
+		                          WS_CHILD | WS_VISIBLE | WS_BORDER | LBS_NOTIFY | LBS_NODATA |
+		                          LBS_OWNERDRAWFIXED | WS_VSCROLL, 0, S(28), win_w,
+		                          win_h - S(28) - (loading_items ? S(10) : 0), main_hwnd, (HMENU)ID_COMBO, inst,
+		                          NULL);
+		set_font(list_hwnd);
+		old_list_proc = (WNDPROC)SetWindowLongPtrW(list_hwnd, GWLP_WNDPROC,
+		        (LONG_PTR)ListProc);
+		progress_hwnd = CreateWindowW(PROGRESS_CLASSW, L"",
+		                              WS_CHILD | (loading_items ? WS_VISIBLE : 0), 0, win_h - S(10), win_w, S(10),
+		                              main_hwnd, (HMENU)ID_PROGRESS, inst, NULL);
+		progress_visible = loading_items;
+		SendMessageW(progress_hwnd, PBM_SETRANGE, 0, MAKELPARAM(0, 100));
+		if (!loading_items) refill_list("");
+	} else {
+		input_hwnd = CreateWindowW(WC_EDITW, L"",
+		                           WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL, prompt_w, S(2),
+		                           win_w - prompt_w, S(24), main_hwnd, (HMENU)ID_EDIT, inst, NULL);
+		set_font(input_hwnd);
+	}
+	old_input_proc = (WNDPROC)SetWindowLongPtrW(input_hwnd, GWLP_WNDPROC,
+	        (LONG_PTR)InputProc);
+	if (has_items) {
+		ui_fiber = ConvertThreadToFiber(NULL);
+		if (!ui_fiber) return 1;
+		search_fiber = CreateFiber(0, search_fiber_run, NULL);
+		if (!search_fiber) {
+			ConvertFiberToThread();
+			return 1;
+		}
+	}
+
+	ShowWindow(main_hwnd, SW_SHOW);
+	UpdateWindow(main_hwnd);
+	SetFocus(input_hwnd);
+	if (loading_items) {
+		SetTimer(main_hwnd, TIMER_PROGRESS, 30, NULL);
+		HANDLE reader = CreateThread(NULL, 0, read_stdin_thread, NULL, 0, NULL);
+		if (!reader) {
+			fputs("wmenu: cannot start stdin reader\n", stderr);
+			return 1;
+		}
+		CloseHandle(reader);
+	}
+	while (GetMessageW(&msg, NULL, 0, 0) > 0) {
+		TranslateMessage(&msg);
+		DispatchMessageW(&msg);
+	}
+	if (search_fiber) {
+		DeleteFiber(search_fiber);
+		ConvertFiberToThread();
+	}
+	return (int)msg.wParam;
 }