feature: add resize-keep-grid to allow text reflow on font changes

config.c

@@ -931,6 +931,9 @@ parse_section_main(struct context *ctx)
     else if (streq(key, "resize-by-cells"))
         return value_to_bool(ctx, &conf->resize_by_cells);
 
+    else if (streq(key, "resize-keep-grid"))
+        return value_to_bool(ctx, &conf->resize_keep_grid);
+
     else if (streq(key, "bold-text-in-bright")) {
         if (streq(value, "palette-based")) {
             conf->bold_in_bright.enabled = true;
@@ -3101,6 +3104,7 @@ config_load(struct config *conf, const char *conf_path,
         .pad_x = 0,
         .pad_y = 0,
         .resize_by_cells = true,
+        .resize_keep_grid = true,
         .resize_delay_ms = 100,
         .bold_in_bright = {
             .enabled = false,

config.h

@@ -140,6 +140,7 @@ struct config {
     bool center;
 
     bool resize_by_cells;
+    bool resize_keep_grid;
 
     uint16_t resize_delay_ms;
 

doc/foot.ini.5.scd

@@ -287,6 +287,18 @@ empty string to be set, but it must be quoted: *KEY=""*)
 
 	Default: _yes_
 
+*resize-keep-grid*
+	Boolean.
+
+	When set to *yes*, the window size will be adjusted with changes in font
+	size to preserve the dimensions of the text grid. When set to *no*, the
+	window size will remain constant and the text grid will be adjusted as
+	necessary to fit the window.
+
+	This option only applies to floating windows.
+
+	Default: _yes_
+
 *initial-window-size-pixels*
 	Initial window width and height in _pixels_ (subject to output
 	scaling), in the form _WIDTHxHEIGHT_. The height _includes_ the

foot.ini

@@ -27,6 +27,7 @@
 # initial-window-mode=windowed
 # pad=0x0                             # optionally append 'center'
 # resize-by-cells=yes
+# resize-keep-grid=yes
 # resize-delay-ms=100
 
 # bold-text-in-bright=no

terminal.c

@@ -819,11 +819,15 @@ term_set_fonts(struct terminal *term, struct fcft_font *fonts[static 4],
      * render_resize() after this function */
     if (resize_grid) {
         /* Use force, since cell-width/height may have changed */
+        enum resize_options resize_opts = RESIZE_FORCE;
+        if (conf->resize_keep_grid)
+            resize_opts |= RESIZE_KEEP_GRID;
+
         render_resize(
             term,
             (int)roundf(term->width / term->scale),
             (int)roundf(term->height / term->scale),
-            RESIZE_FORCE | RESIZE_KEEP_GRID);
+            resize_opts);
     }
     return true;
 }