Disable formatting temporarily for clang-format-18

Clang-format‑18 fails to format:
    const int(*init_point)[2];
into:
    const int (*init_point)[2];

Clang-format 20 is known to produce the correct spacing. However,
clang-format‑18 is required for CI compatibility with Ubuntu 24.04
LTS, as it ships clang-format version 18 by default.

Author: jserv

apps/spline.c

@@ -44,7 +44,9 @@ static void _init_control_point(apps_spline_data_t *spline)
         {100, 280},
         {280, 100},
     };
-    const int(*init_point)[2];
+    /* clang-format off */
+    const int (*init_point)[2];
+    /* clang-format on */
     if (spline->n_points == 4) {
         init_point = init_point_cubic;
     } else if (spline->n_points == 3) {

src/draw-pixman.c

@@ -158,9 +158,11 @@ void twin_fill(twin_pixmap_t *_dst,
     pixman_image_t *dst = create_pixman_image_from_twin_pixmap(_dst);
     pixman_color_t color;
     twin_argb32_to_pixman_color(pixel, &color);
+    /* clang-format off */
     pixman_image_fill_rectangles(
         twin_to_pixman_op(operator), dst, &color, 1,
-        &(pixman_rectangle16_t){left, top, right - left, bottom - top});
+        &(pixman_rectangle16_t) {left, top, right - left, bottom - top});
+    /* clang-format on */
 
     twin_pixmap_damage(_dst, left, top, right, bottom);
 

src/image-gif.c

@@ -165,8 +165,11 @@ static table_t *table_new(int key_size)
         table->bulk = init_bulk;
         table->n_entries = (1 << key_size) + 2;
         table->entries = (entry_t *) &table[1];
-        for (int key = 0; key < (1 << key_size); key++)
-            table->entries[key] = (entry_t){1, 0xFFF, key};
+        for (int key = 0; key < (1 << key_size); key++) {
+            /* clang-format off */
+            table->entries[key] = (entry_t) {1, 0xFFF, key};
+            /* clang-format on */
+        }
     }
     return table;
 }
@@ -190,7 +193,9 @@ static int entry_add(table_t **table_p,
         table->entries = (entry_t *) &table[1];
         *table_p = table;
     }
-    table->entries[table->n_entries] = (entry_t){length, prefix, suffix};
+    /* clang-format off */
+    table->entries[table->n_entries] = (entry_t) {length, prefix, suffix};
+    /* clang-format on */
     table->n_entries++;
     if ((table->n_entries & (table->n_entries - 1)) == 0)
         return 1;

src/log.c

@@ -115,7 +115,9 @@ int log_add_callback(log_func_t fn, void *udata, int level)
 {
     for (int i = 0; i < MAX_CALLBACKS; i++) {
         if (!L.callbacks[i].fn) {
-            L.callbacks[i] = (callback_t){fn, udata, level};
+            /* clang-format off */
+            L.callbacks[i] = (callback_t) {fn, udata, level};
+            /* clang-format on */
             return 0;
         }
     }