Add an optional build-time switch to disable scrollback support

This change introduces a new `scrollback` Meson build option (enabled
by default) that lets foot be compiled without scrollback history.
When the option is off, `FOOT_HAVE_SCROLLBACK` is left
undefined and the relevant code is excluded from the build,
producing a slimmer terminal for use cases that do not need it.

With scrollback disabled:

- The `[scrollback]` section in `foot.ini` and its key bindings
  become no-ops.
- In-terminal search is removed,
  along with the "pipe scrollback" action, the scrollback indicator,
  and their colors/overlays.
- IME hooks for the search box, mouse-wheel scrollback handling,
  and related `terminal` state are compiled out.
- Selection auto-scroll (the timer that scrolls the viewport while
  a drag-selection extends past the visible area) is removed,
  since with no scrollback there is nowhere to scroll to.
  The associated function declarations,
  `enum selection_scroll_direction`,
  the `auto_scroll` field on `terminal::selection`,
  and their init/teardown sites are all excluded from the build.

To keep action enumerations stable across build configurations,
two range markers (`BIND_ACTION_PIPE_FIRST` / `BIND_ACTION_PIPE_LAST`)
are introduced so that pipe-action handling does not depend on
`PIPE_SCROLLBACK` being present. The build summary and
`foot --version` now report `+scrollback` or `-scrollback`,
and the config tests have been updated to account for optional section.

CHANGELOG.md

@@ -72,6 +72,14 @@
 
 ## Unreleased
 ### Added
+
+* New `scrollback` Meson build option (enabled by default). When
+  disabled, scrollback history, in-terminal search, the scrollback
+  indicator, the "pipe scrollback" action, and selection auto-scroll
+  are excluded from the build, producing a smaller binary. `foot
+  --version` reports `+scrollback` or `-scrollback`.
+
+
 ### Changed
 ### Deprecated
 ### Removed

commands.c

@@ -10,6 +10,7 @@
 #include "url-mode.h"
 #include "util.h"
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 void
 cmd_scrollback_up(struct terminal *term, int rows)
 {
@@ -113,3 +114,4 @@ cmd_scrollback_down(struct terminal *term, int rows)
     render_refresh_urls(term);
     render_refresh(term);
 }
+#endif /* FOOT_HAVE_SCROLLBACK */

commands.h

@@ -2,5 +2,7 @@
 
 #include "terminal.h"
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 void cmd_scrollback_up(struct terminal *term, int rows);
 void cmd_scrollback_down(struct terminal *term, int rows);
+#endif /* FOOT_HAVE_SCROLLBACK */

config.c

@@ -109,6 +109,7 @@ static const uint32_t default_sixel_colors[16] = {
 static const char *const binding_action_map[] = {
     [BIND_ACTION_NONE] = NULL,
     [BIND_ACTION_NOOP] = "noop",
+#if defined(FOOT_HAVE_SCROLLBACK)
     [BIND_ACTION_SCROLLBACK_UP_PAGE] = "scrollback-up-page",
     [BIND_ACTION_SCROLLBACK_UP_HALF_PAGE] = "scrollback-up-half-page",
     [BIND_ACTION_SCROLLBACK_UP_LINE] = "scrollback-up-line",
@@ -117,10 +118,13 @@ static const char *const binding_action_map[] = {
     [BIND_ACTION_SCROLLBACK_DOWN_LINE] = "scrollback-down-line",
     [BIND_ACTION_SCROLLBACK_HOME] = "scrollback-home",
     [BIND_ACTION_SCROLLBACK_END] = "scrollback-end",
+#endif /* FOOT_HAVE_SCROLLBACK */
     [BIND_ACTION_CLIPBOARD_COPY] = "clipboard-copy",
     [BIND_ACTION_CLIPBOARD_PASTE] = "clipboard-paste",
     [BIND_ACTION_PRIMARY_PASTE] = "primary-paste",
+#if defined(FOOT_HAVE_SCROLLBACK)
     [BIND_ACTION_SEARCH_START] = "search-start",
+#endif
     [BIND_ACTION_FONT_SIZE_UP] = "font-increase",
     [BIND_ACTION_FONT_SIZE_DOWN] = "font-decrease",
     [BIND_ACTION_FONT_SIZE_RESET] = "font-reset",
@@ -128,7 +132,9 @@ static const char *const binding_action_map[] = {
     [BIND_ACTION_MINIMIZE] = "minimize",
     [BIND_ACTION_MAXIMIZE] = "maximize",
     [BIND_ACTION_FULLSCREEN] = "fullscreen",
+#if defined(FOOT_HAVE_SCROLLBACK)
     [BIND_ACTION_PIPE_SCROLLBACK] = "pipe-scrollback",
+#endif
     [BIND_ACTION_PIPE_VIEW] = "pipe-visible",
     [BIND_ACTION_PIPE_SELECTED] = "pipe-selected",
     [BIND_ACTION_PIPE_COMMAND_OUTPUT] = "pipe-command-output",
@@ -149,8 +155,10 @@ static const char *const binding_action_map[] = {
     [BIND_ACTION_THEME_TOGGLE] = "color-theme-toggle",
 
     /* Mouse-specific actions */
+#if defined(FOOT_HAVE_SCROLLBACK)
     [BIND_ACTION_SCROLLBACK_UP_MOUSE] = "scrollback-up-mouse",
     [BIND_ACTION_SCROLLBACK_DOWN_MOUSE] = "scrollback-down-mouse",
+#endif /* FOOT_HAVE_SCROLLBACK */
     [BIND_ACTION_SELECT_BEGIN] = "select-begin",
     [BIND_ACTION_SELECT_BEGIN_BLOCK] = "select-begin-block",
     [BIND_ACTION_SELECT_EXTEND] = "select-extend",
@@ -161,6 +169,7 @@ static const char *const binding_action_map[] = {
     [BIND_ACTION_SELECT_ROW] = "select-row",
 };
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static const char *const search_binding_action_map[] = {
     [BIND_ACTION_SEARCH_NONE] = NULL,
     [BIND_ACTION_SEARCH_SCROLLBACK_UP_PAGE] = "scrollback-up-page",
@@ -199,6 +208,7 @@ static const char *const search_binding_action_map[] = {
     [BIND_ACTION_SEARCH_PRIMARY_PASTE] = "primary-paste",
     [BIND_ACTION_SEARCH_UNICODE_INPUT] = "unicode-input",
 };
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static const char *const url_binding_action_map[] = {
     [BIND_ACTION_URL_NONE] = NULL,
@@ -208,8 +218,10 @@ static const char *const url_binding_action_map[] = {
 
 static_assert(ALEN(binding_action_map) == BIND_ACTION_COUNT,
               "binding action map size mismatch");
+#if defined(FOOT_HAVE_SCROLLBACK)
 static_assert(ALEN(search_binding_action_map) == BIND_ACTION_SEARCH_COUNT,
               "search binding action map size mismatch");
+#endif
 static_assert(ALEN(url_binding_action_map) == BIND_ACTION_URL_COUNT,
               "URL binding action map size mismatch");
 
@@ -1249,6 +1261,7 @@ parse_section_desktop_notifications(struct context *ctx)
     }
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static bool
 parse_section_scrollback(struct context *ctx)
 {
@@ -1291,6 +1304,7 @@ parse_section_scrollback(struct context *ctx)
         return false;
     }
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static bool
 parse_section_url(struct context *ctx)
@@ -1489,6 +1503,7 @@ parse_color_theme(struct context *ctx, struct color_theme *theme)
         return true;
     }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     else if (streq(key, "scrollback-indicator")) {
         if (!value_to_two_colors(
                 ctx,
@@ -1530,6 +1545,7 @@ parse_color_theme(struct context *ctx, struct color_theme *theme)
         theme->use_custom.search_box_match = true;
         return true;
     }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     else if (streq(key, "cursor")) {
         if (!value_to_two_colors(
@@ -2313,8 +2329,8 @@ parse_key_binding_section(struct context *ctx,
 
         /* TODO: this is ugly... */
         if (action_map == binding_action_map &&
-            action >= BIND_ACTION_PIPE_SCROLLBACK &&
+            action >= BIND_ACTION_PIPE_FIRST &&
-            action <= BIND_ACTION_PIPE_COMMAND_OUTPUT)
+            action <= BIND_ACTION_PIPE_LAST)
         {
             ssize_t pipe_remove_len = pipe_argv_from_value(ctx, &aux.pipe);
             if (pipe_remove_len <= 0)
@@ -2478,6 +2494,7 @@ parse_section_key_bindings(struct context *ctx)
         &ctx->conf->bindings.key);
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static bool
 parse_section_search_bindings(struct context *ctx)
 {
@@ -2486,6 +2503,7 @@ parse_section_search_bindings(struct context *ctx)
         BIND_ACTION_SEARCH_COUNT, search_binding_action_map,
         &ctx->conf->bindings.search);
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static bool
 parse_section_url_bindings(struct context *ctx)
@@ -3046,7 +3064,9 @@ enum section {
     SECTION_SECURITY,
     SECTION_BELL,
     SECTION_DESKTOP_NOTIFICATIONS,
+#if defined(FOOT_HAVE_SCROLLBACK)
     SECTION_SCROLLBACK,
+#endif
     SECTION_URL,
     SECTION_REGEX,
     SECTION_COLORS_DARK,
@@ -3055,7 +3075,9 @@ enum section {
     SECTION_MOUSE,
     SECTION_CSD,
     SECTION_KEY_BINDINGS,
+#if defined(FOOT_HAVE_SCROLLBACK)
     SECTION_SEARCH_BINDINGS,
+#endif
     SECTION_URL_BINDINGS,
     SECTION_MOUSE_BINDINGS,
     SECTION_TEXT_BINDINGS,
@@ -3082,7 +3104,9 @@ static const struct {
     [SECTION_SECURITY] =        {&parse_section_security, "security"},
     [SECTION_BELL] =            {&parse_section_bell, "bell"},
     [SECTION_DESKTOP_NOTIFICATIONS] = {&parse_section_desktop_notifications, "desktop-notifications"},
+#if defined(FOOT_HAVE_SCROLLBACK)
     [SECTION_SCROLLBACK] =      {&parse_section_scrollback, "scrollback"},
+#endif
     [SECTION_URL] =             {&parse_section_url, "url"},
     [SECTION_REGEX] =           {&parse_section_regex, "regex", true},
     [SECTION_COLORS_DARK] =     {&parse_section_colors_dark, "colors-dark"},
@@ -3091,7 +3115,9 @@ static const struct {
     [SECTION_MOUSE] =           {&parse_section_mouse, "mouse"},
     [SECTION_CSD] =             {&parse_section_csd, "csd"},
     [SECTION_KEY_BINDINGS] =    {&parse_section_key_bindings, "key-bindings"},
+#if defined(FOOT_HAVE_SCROLLBACK)
     [SECTION_SEARCH_BINDINGS] = {&parse_section_search_bindings, "search-bindings"},
+#endif
     [SECTION_URL_BINDINGS] =    {&parse_section_url_bindings, "url-bindings"},
     [SECTION_MOUSE_BINDINGS] =  {&parse_section_mouse_bindings, "mouse-bindings"},
     [SECTION_TEXT_BINDINGS] =   {&parse_section_text_bindings, "text-bindings"},
@@ -3325,16 +3351,20 @@ static void
 add_default_key_bindings(struct config *conf)
 {
     const struct config_key_binding bindings[] = {
+#if defined(FOOT_HAVE_SCROLLBACK)
         {BIND_ACTION_SCROLLBACK_UP_PAGE, m(XKB_MOD_NAME_SHIFT), {{XKB_KEY_Prior}}},
         {BIND_ACTION_SCROLLBACK_UP_PAGE, m(XKB_MOD_NAME_SHIFT), {{XKB_KEY_KP_Prior}}},
         {BIND_ACTION_SCROLLBACK_DOWN_PAGE, m(XKB_MOD_NAME_SHIFT), {{XKB_KEY_Next}}},
         {BIND_ACTION_SCROLLBACK_DOWN_PAGE, m(XKB_MOD_NAME_SHIFT), {{XKB_KEY_KP_Next}}},
+#endif /* FOOT_HAVE_SCROLLBACK */
         {BIND_ACTION_CLIPBOARD_COPY, m(XKB_MOD_NAME_CTRL "+" XKB_MOD_NAME_SHIFT), {{XKB_KEY_c}}},
         {BIND_ACTION_CLIPBOARD_COPY, m("none"), {{XKB_KEY_XF86Copy}}},
         {BIND_ACTION_CLIPBOARD_PASTE, m(XKB_MOD_NAME_CTRL "+" XKB_MOD_NAME_SHIFT), {{XKB_KEY_v}}},
         {BIND_ACTION_CLIPBOARD_PASTE, m("none"), {{XKB_KEY_XF86Paste}}},
         {BIND_ACTION_PRIMARY_PASTE, m(XKB_MOD_NAME_SHIFT), {{XKB_KEY_Insert}}},
+#if defined(FOOT_HAVE_SCROLLBACK)
         {BIND_ACTION_SEARCH_START, m(XKB_MOD_NAME_CTRL "+" XKB_MOD_NAME_SHIFT), {{XKB_KEY_r}}},
+#endif
         {BIND_ACTION_FONT_SIZE_UP, m(XKB_MOD_NAME_CTRL), {{XKB_KEY_plus}}},
         {BIND_ACTION_FONT_SIZE_UP, m(XKB_MOD_NAME_CTRL), {{XKB_KEY_equal}}},
         {BIND_ACTION_FONT_SIZE_UP, m(XKB_MOD_NAME_CTRL), {{XKB_KEY_KP_Add}}},
@@ -3354,6 +3384,7 @@ add_default_key_bindings(struct config *conf)
 }
 
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static void
 add_default_search_bindings(struct config *conf)
 {
@@ -3407,6 +3438,7 @@ add_default_search_bindings(struct config *conf)
     conf->bindings.search.count = ALEN(bindings);
     conf->bindings.search.arr = xmemdup(bindings, sizeof(bindings));
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static void
 add_default_url_bindings(struct config *conf)
@@ -3427,8 +3459,10 @@ static void
 add_default_mouse_bindings(struct config *conf)
 {
     const struct config_key_binding bindings[] = {
+#if defined(FOOT_HAVE_SCROLLBACK)
         {BIND_ACTION_SCROLLBACK_UP_MOUSE, m("none"), {.m = {BTN_WHEEL_BACK, 1}}},
         {BIND_ACTION_SCROLLBACK_DOWN_MOUSE, m("none"), {.m = {BTN_WHEEL_FORWARD, 1}}},
+#endif /* FOOT_HAVE_SCROLLBACK */
         {BIND_ACTION_PRIMARY_PASTE, m("none"), {.m = {BTN_MIDDLE, 1}}},
         {BIND_ACTION_SELECT_BEGIN, m("none"), {.m = {BTN_LEFT, 1}}},
         {BIND_ACTION_SELECT_BEGIN_BLOCK, m(XKB_MOD_NAME_CTRL), {.m = {BTN_LEFT, 1}}},
@@ -3530,6 +3564,7 @@ config_load(struct config *conf, const char *conf_path,
         },
         .custom_regexes = tll_init(),
         .can_shape_grapheme = fcft_caps & FCFT_CAPABILITY_GRAPHEME_SHAPING,
+#if defined(FOOT_HAVE_SCROLLBACK)
         .scrollback = {
             .lines = 1000,
             .indicator = {
@@ -3539,6 +3574,7 @@ config_load(struct config *conf, const char *conf_path,
             },
             .multiplier = 3.,
         },
+#endif /* FOOT_HAVE_SCROLLBACK */
         .colors_dark = {
             .fg = default_foreground,
             .bg = default_background,
@@ -3555,7 +3591,9 @@ config_load(struct config *conf, const char *conf_path,
             },
             .use_custom = {
                 .jump_label = false,
+#if defined(FOOT_HAVE_SCROLLBACK)
                 .scrollback_indicator = false,
+#endif
                 .url = false,
             },
             .blur = false,
@@ -3707,7 +3745,9 @@ config_load(struct config *conf, const char *conf_path,
     }
 
     add_default_key_bindings(conf);
+#if defined(FOOT_HAVE_SCROLLBACK)
     add_default_search_bindings(conf);
+#endif
     add_default_url_bindings(conf);
     add_default_mouse_bindings(conf);
 
@@ -3766,8 +3806,10 @@ config_load(struct config *conf, const char *conf_path,
 #if defined(_DEBUG)
     for (size_t i = 0; i < conf->bindings.key.count; i++)
         xassert(conf->bindings.key.arr[i].action != BIND_ACTION_NONE);
+#if defined(FOOT_HAVE_SCROLLBACK)
     for (size_t i = 0; i < conf->bindings.search.count; i++)
         xassert(conf->bindings.search.arr[i].action != BIND_ACTION_SEARCH_NONE);
+#endif /* FOOT_HAVE_SCROLLBACK */
     for (size_t i = 0; i < conf->bindings.url.count; i++)
         xassert(conf->bindings.url.arr[i].action != BIND_ACTION_URL_NONE);
 #endif
@@ -3842,9 +3884,11 @@ config_override_apply(struct config *conf, config_override_t *overrides,
         resolve_key_binding_collisions(
             conf, section_info[SECTION_KEY_BINDINGS].name,
             binding_action_map, &conf->bindings.key, KEY_BINDING) &&
+#if defined(FOOT_HAVE_SCROLLBACK)
         resolve_key_binding_collisions(
             conf, section_info[SECTION_SEARCH_BINDINGS].name,
             search_binding_action_map, &conf->bindings.search, KEY_BINDING) &&
+#endif /* FOOT_HAVE_SCROLLBACK */
         resolve_key_binding_collisions(
             conf, section_info[SECTION_URL_BINDINGS].name,
             url_binding_action_map, &conf->bindings.url, KEY_BINDING) &&
@@ -3935,7 +3979,9 @@ config_clone(const struct config *old)
     conf->app_id = xstrdup(old->app_id);
     conf->toplevel_tag = xstrdup(old->toplevel_tag);
     conf->word_delimiters = xc32dup(old->word_delimiters);
+#if defined(FOOT_HAVE_SCROLLBACK)
     conf->scrollback.indicator.text = xc32dup(old->scrollback.indicator.text);
+#endif
     conf->server_socket_path = xstrdup(old->server_socket_path);
     spawn_template_clone(&conf->bell.command, &old->bell.command);
     spawn_template_clone(&conf->desktop_notifications.command,
@@ -3969,7 +4015,9 @@ config_clone(const struct config *old)
     }
 
     key_binding_list_clone(&conf->bindings.key, &old->bindings.key);
+#if defined(FOOT_HAVE_SCROLLBACK)
     key_binding_list_clone(&conf->bindings.search, &old->bindings.search);
+#endif
     key_binding_list_clone(&conf->bindings.url, &old->bindings.url);
     key_binding_list_clone(&conf->bindings.mouse, &old->bindings.mouse);
 
@@ -4037,7 +4085,9 @@ config_free(struct config *conf)
     free(conf->toplevel_tag);
     free(conf->word_delimiters);
     spawn_template_free(&conf->bell.command);
+#if defined(FOOT_HAVE_SCROLLBACK)
     free(conf->scrollback.indicator.text);
+#endif
     spawn_template_free(&conf->desktop_notifications.command);
     spawn_template_free(&conf->desktop_notifications.command_action_arg);
     spawn_template_free(&conf->desktop_notifications.close);
@@ -4062,7 +4112,9 @@ config_free(struct config *conf)
     }
 
     free_key_binding_list(&conf->bindings.key);
+#if defined(FOOT_HAVE_SCROLLBACK)
     free_key_binding_list(&conf->bindings.search);
+#endif
     free_key_binding_list(&conf->bindings.url);
     free_key_binding_list(&conf->bindings.mouse);
     tll_free_and_free(conf->mouse.selection_override_modifiers, free);

config.h

@@ -166,11 +166,14 @@ struct color_theme {
         uint32_t bg;
     } jump_label;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     struct {
         uint32_t fg;
         uint32_t bg;
     } scrollback_indicator;
+#endif /* FOOT_HAVE_SCROLLBACK */
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     struct {
         struct {
             uint32_t fg;
@@ -182,14 +185,17 @@ struct color_theme {
             uint32_t bg;
         } match;
     } search_box;
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     struct {
         bool cursor:1;
         bool jump_label:1;
-        bool scrollback_indicator:1;
         bool url:1;
+#if defined(FOOT_HAVE_SCROLLBACK)
+        bool scrollback_indicator:1;
         bool search_box_no_match:1;
         bool search_box_match:1;
+#endif /* FOOT_HAVE_SCROLLBACK */
         uint8_t dim;
     } use_custom;
 
@@ -308,6 +314,7 @@ struct config {
         bool command_focused;
     } bell;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     struct {
         uint32_t lines;
 
@@ -328,6 +335,7 @@ struct config {
         } indicator;
         float multiplier;
     } scrollback;
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     struct {
         char32_t *label_letters;
@@ -375,9 +383,11 @@ struct config {
          * Special modes
          */
 
+#if defined(FOOT_HAVE_SCROLLBACK)
         /* While searching (not - action to *start* a search is in the
          * 'key' bindings above */
         struct config_key_binding_list search;
+#endif /* FOOT_HAVE_SCROLLBACK */
 
         /* While showing URL jump labels */
         struct config_key_binding_list url;

csi.c

@@ -991,11 +991,13 @@ csi_dispatch(struct terminal *term, uint8_t final)
                 term->grid->cursor.lcf = false;
                 break;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
             case 3: {
                 /* Erase scrollback */
                 term_erase_scrollback(term);
                 break;
             }
+#endif
 
             default:
                 UNHANDLED();

foot-features.c

@@ -16,6 +16,12 @@ const char version_and_features[] =
     " -ime"
 #endif
 
+#if defined(FOOT_HAVE_SCROLLBACK)
+    " +scrollback"
+#else
+    " -scrollback"
+#endif
+
 #if defined(FOOT_GRAPHEME_CLUSTERING) && FOOT_GRAPHEME_CLUSTERING
     " +graphemes"
 #else

ime.c

@@ -177,10 +177,14 @@ done(void *data, struct zwp_text_input_v3 *zwp_text_input_v3,
         ime_reset_preedit(seat);
 
         if (term != NULL) {
-            if (term->is_searching)
+#if defined(FOOT_HAVE_SCROLLBACK)
+            if (term->is_searching) {
                 render_refresh_search(term);
-            else
+            } else
+#endif
+            {
                 render_refresh(term);
+            }
         }
     }
 
@@ -198,11 +202,15 @@ done(void *data, struct zwp_text_input_v3 *zwp_text_input_v3,
         size_t len = strlen(text);
 
         if (term != NULL) {
+#if defined(FOOT_HAVE_SCROLLBACK)
             if (term->is_searching) {
                 search_add_chars(term, text, len);
                 render_refresh_search(term);
             } else
+#endif
+            {
                 term_to_slave(term, text, len);
+            }
         }
         ime_reset_pending_commit(seat);
     }
@@ -367,10 +375,14 @@ done(void *data, struct zwp_text_input_v3 *zwp_text_input_v3,
     ime_reset_pending_preedit(seat);
 
     if (term != NULL) {
-        if (term->is_searching)
+#if defined(FOOT_HAVE_SCROLLBACK)
+        if (term->is_searching) {
             render_refresh_search(term);
-        else
+        } else
+#endif
+        {
             render_refresh(term);
+        }
     }
 }
 
@@ -473,9 +485,11 @@ ime_update_cursor_rect(struct seat *seat)
     if (seat->ime.preedit.cells != NULL)
         goto update;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     /* Set in render_search_box() */
     if (term->is_searching)
         goto update;
+#endif
 
     int x, y, width, height;
     int col = term->grid->cursor.point.col;

input.c

@@ -82,7 +82,9 @@ pipe_closed:
     return true;
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static void alternate_scroll(struct seat *seat, int amount, int button);
+#endif
 
 static bool
 execute_binding(struct seat *seat, struct terminal *term,
@@ -97,6 +99,7 @@ execute_binding(struct seat *seat, struct terminal *term,
     case BIND_ACTION_NOOP:
         return true;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     case BIND_ACTION_SCROLLBACK_UP_PAGE:
         if (term->grid == &term->normal) {
             cmd_scrollback_up(term, term->rows);
@@ -176,6 +179,7 @@ execute_binding(struct seat *seat, struct terminal *term,
             return true;
         }
         break;
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     case BIND_ACTION_CLIPBOARD_COPY:
         selection_to_clipboard(seat, term, serial);
@@ -191,9 +195,11 @@ execute_binding(struct seat *seat, struct terminal *term,
         term_reset_view(term);
         return true;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     case BIND_ACTION_SEARCH_START:
         search_begin(term);
         return true;
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     case BIND_ACTION_FONT_SIZE_UP:
         term_font_size_increase(term);
@@ -231,10 +237,12 @@ execute_binding(struct seat *seat, struct terminal *term,
             xdg_toplevel_set_fullscreen(term->window->xdg_toplevel, NULL);
         return true;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     case BIND_ACTION_PIPE_SCROLLBACK:
         if (term->grid == &term->alt)
             break;
         /* FALLTHROUGH */
+#endif /* FOOT_HAVE_SCROLLBACK */
     case BIND_ACTION_PIPE_VIEW:
     case BIND_ACTION_PIPE_SELECTED:
     case BIND_ACTION_PIPE_COMMAND_OUTPUT: {
@@ -265,9 +273,11 @@ execute_binding(struct seat *seat, struct terminal *term,
 
         bool success;
         switch (action) {
+#if defined(FOOT_HAVE_SCROLLBACK)
         case BIND_ACTION_PIPE_SCROLLBACK:
             success = term_scrollback_to_text(term, &text, &len);
             break;
+#endif /* FOOT_HAVE_SCROLLBACK */
 
         case BIND_ACTION_PIPE_VIEW:
             success = term_view_to_text(term, &text, &len);
@@ -1649,6 +1659,7 @@ key_press_release(struct seat *seat, struct terminal *term, uint32_t serial,
         return;
     }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     else if (term->is_searching) {
         if (pressed) {
             if (should_repeat)
@@ -1660,6 +1671,7 @@ key_press_release(struct seat *seat, struct terminal *term, uint32_t serial,
         }
         return;
     }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     else  if (urls_mode_is_active(term)) {
         if (pressed) {
@@ -1931,9 +1943,11 @@ UNITTEST
                 .start = {-1, -1},
                 .end = {-1, -1},
             },
+#if defined(FOOT_HAVE_SCROLLBACK)
             .auto_scroll = {
                 .fd = -1,
              },
+#endif
         },
     };
 
@@ -2768,6 +2782,7 @@ wl_pointer_motion(void *data, struct wl_pointer *wl_pointer,
         /* Cursor is inside the grid, i.e. *not* in the margins */
         const bool cursor_is_on_grid = seat->mouse.col >= 0 && seat->mouse.row >= 0;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
         enum selection_scroll_direction auto_scroll_direction
             = term->selection.coords.end.row < 0
                 ? SELECTION_SCROLL_NOT
@@ -2779,9 +2794,14 @@ wl_pointer_motion(void *data, struct wl_pointer *wl_pointer,
 
         if (auto_scroll_direction == SELECTION_SCROLL_NOT)
             selection_stop_scroll_timer(term);
+#endif /* FOOT_HAVE_SCROLLBACK */
 
         /* Update selection */
-        if (!term->is_searching) {
+#if defined(FOOT_HAVE_SCROLLBACK)
+        if (!term->is_searching)
+#endif
+        {
+#if defined(FOOT_HAVE_SCROLLBACK)
             if (auto_scroll_direction != SELECTION_SCROLL_NOT) {
                 /*
                  * Start 'selection auto-scrolling'
@@ -2809,6 +2829,7 @@ wl_pointer_motion(void *data, struct wl_pointer *wl_pointer,
                     term, 400000000 / (divisor > 0 ? divisor : 1),
                     auto_scroll_direction, seat->mouse.col);
             }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
             if (term->selection.ongoing &&
                 (cursor_is_on_new_cell ||
@@ -3244,7 +3265,9 @@ wl_pointer_button(void *data, struct wl_pointer *wl_pointer,
         break;
 
     case TERM_SURF_GRID: {
+#if defined(FOOT_HAVE_SCROLLBACK)
         search_cancel(term);
+#endif
         urls_reset(term);
 
         bool cursor_is_on_grid = seat->mouse.col >= 0 && seat->mouse.row >= 0;
@@ -3301,6 +3324,7 @@ wl_pointer_button(void *data, struct wl_pointer *wl_pointer,
     }
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static void
 alternate_scroll(struct seat *seat, int amount, int button)
 {
@@ -3320,6 +3344,7 @@ alternate_scroll(struct seat *seat, int amount, int button)
         key_press_release(seat, term, seat->kbd.serial, key, XKB_KEY_DOWN);
     key_press_release(seat, term, seat->kbd.serial, key, XKB_KEY_UP);
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static void
 mouse_scroll(struct seat *seat, int amount, enum wl_pointer_axis axis)
@@ -3367,10 +3392,15 @@ mouse_scroll(struct seat *seat, int amount, enum wl_pointer_axis axis)
 static double
 mouse_scroll_multiplier(const struct terminal *term, const struct seat *seat)
 {
+#if defined(FOOT_HAVE_SCROLLBACK)
     return (term->grid == &term->normal ||
             (term_mouse_grabbed(term, seat) && term->alt_scrolling))
         ? term->conf->scrollback.multiplier
         : 1.0;
+#else
+    (void)term; (void)seat;
+    return 1.0;
+#endif /* FOOT_HAVE_SCROLLBACK */
 }
 
 static void

key-binding.c

@@ -111,7 +111,9 @@ key_binding_new_for_seat(struct key_binding_manager *mgr,
         struct key_set set = {
             .public = {
                 .key = tll_init(),
+#if defined(FOOT_HAVE_SCROLLBACK)
                 .search = tll_init(),
+#endif
                 .url = tll_init(),
                 .mouse = tll_init(),
             },
@@ -152,7 +154,9 @@ key_binding_new_for_conf(struct key_binding_manager *mgr,
         struct key_set set = {
             .public = {
                 .key = tll_init(),
+#if defined(FOOT_HAVE_SCROLLBACK)
                 .search = tll_init(),
+#endif
                 .url = tll_init(),
                 .mouse = tll_init(),
             },
@@ -531,6 +535,7 @@ convert_key_bindings(struct key_set *set)
     }
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static void
 convert_search_bindings(struct key_set *set)
 {
@@ -541,6 +546,7 @@ convert_search_bindings(struct key_set *set)
         convert_key_binding(set, binding, &set->public.search);
     }
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static void
 convert_url_bindings(struct key_set *set)
@@ -597,7 +603,9 @@ load_keymap(struct key_set *set)
     }
 
     convert_key_bindings(set);
+#if defined(FOOT_HAVE_SCROLLBACK)
     convert_search_bindings(set);
+#endif
     convert_url_bindings(set);
     convert_mouse_bindings(set);
 
@@ -638,7 +646,9 @@ static void NOINLINE
 unload_keymap(struct key_set *set)
 {
     key_bindings_destroy(&set->public.key);
+#if defined(FOOT_HAVE_SCROLLBACK)
     key_bindings_destroy(&set->public.search);
+#endif
     key_bindings_destroy(&set->public.url);
     key_bindings_destroy(&set->public.mouse);
     set->public.selection_overrides = 0;

key-binding.h

@@ -10,6 +10,7 @@
 enum bind_action_normal {
     BIND_ACTION_NONE,
     BIND_ACTION_NOOP,
+#if defined(FOOT_HAVE_SCROLLBACK)
     BIND_ACTION_SCROLLBACK_UP_PAGE,
     BIND_ACTION_SCROLLBACK_UP_HALF_PAGE,
     BIND_ACTION_SCROLLBACK_UP_LINE,
@@ -18,10 +19,13 @@ enum bind_action_normal {
     BIND_ACTION_SCROLLBACK_DOWN_LINE,
     BIND_ACTION_SCROLLBACK_HOME,
     BIND_ACTION_SCROLLBACK_END,
+#endif /* FOOT_HAVE_SCROLLBACK */
     BIND_ACTION_CLIPBOARD_COPY,
     BIND_ACTION_CLIPBOARD_PASTE,
     BIND_ACTION_PRIMARY_PASTE,
+#if defined(FOOT_HAVE_SCROLLBACK)
     BIND_ACTION_SEARCH_START,
+#endif
     BIND_ACTION_FONT_SIZE_UP,
     BIND_ACTION_FONT_SIZE_DOWN,
     BIND_ACTION_FONT_SIZE_RESET,
@@ -29,8 +33,10 @@ enum bind_action_normal {
     BIND_ACTION_MINIMIZE,
     BIND_ACTION_MAXIMIZE,
     BIND_ACTION_FULLSCREEN,
-    BIND_ACTION_PIPE_SCROLLBACK,
     BIND_ACTION_PIPE_VIEW,
+#if defined(FOOT_HAVE_SCROLLBACK)
+    BIND_ACTION_PIPE_SCROLLBACK,
+#endif
     BIND_ACTION_PIPE_SELECTED,
     BIND_ACTION_PIPE_COMMAND_OUTPUT,
     BIND_ACTION_SHOW_URLS_COPY,
@@ -50,8 +56,10 @@ enum bind_action_normal {
     BIND_ACTION_THEME_TOGGLE,
 
     /* Mouse specific actions - i.e. they require a mouse coordinate */
+#if defined(FOOT_HAVE_SCROLLBACK)
     BIND_ACTION_SCROLLBACK_UP_MOUSE,
     BIND_ACTION_SCROLLBACK_DOWN_MOUSE,
+#endif /* FOOT_HAVE_SCROLLBACK */
     BIND_ACTION_SELECT_BEGIN,
     BIND_ACTION_SELECT_BEGIN_BLOCK,
     BIND_ACTION_SELECT_EXTEND,
@@ -63,8 +71,13 @@ enum bind_action_normal {
 
     BIND_ACTION_KEY_COUNT = BIND_ACTION_THEME_TOGGLE + 1,
     BIND_ACTION_COUNT = BIND_ACTION_SELECT_ROW + 1,
+
+    /* Range markers (aliases) - stable regardless of FOOT_HAVE_SCROLLBACK */
+    BIND_ACTION_PIPE_FIRST = BIND_ACTION_PIPE_VIEW,
+    BIND_ACTION_PIPE_LAST = BIND_ACTION_PIPE_COMMAND_OUTPUT,
 };
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 enum bind_action_search {
     BIND_ACTION_SEARCH_NONE,
     BIND_ACTION_SEARCH_SCROLLBACK_UP_PAGE,
@@ -104,6 +117,7 @@ enum bind_action_search {
     BIND_ACTION_SEARCH_UNICODE_INPUT,
     BIND_ACTION_SEARCH_COUNT,
 };
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 enum bind_action_url {
     BIND_ACTION_URL_NONE,
@@ -142,7 +156,9 @@ struct wayland;
 
 struct key_binding_set {
     key_binding_list_t key;
+#if defined(FOOT_HAVE_SCROLLBACK)
     key_binding_list_t search;
+#endif
     key_binding_list_t url;
     key_binding_list_t mouse;
     xkb_mod_mask_t selection_overrides;

meson.build

@@ -90,6 +90,9 @@ add_project_arguments(
   (get_option('ime')
     ? ['-DFOOT_IME_ENABLED=1']
     : []) +
+  (get_option('scrollback')
+    ? ['-DFOOT_HAVE_SCROLLBACK']
+    : []) +
   (get_option('b_pgo') == 'use'
     ? ['-DFOOT_PGO_ENABLED=1']
     : []) +
@@ -443,6 +446,7 @@ summary(
     'Documentation': scdoc.found(),
     'Themes': get_option('themes'),
     'IME': get_option('ime'),
+    'Scrollback': get_option('scrollback'),
     'Grapheme clustering': utf8proc.found(),
     'utmp backend': utmp_backend,
     'utmp helper default path': utmp_default_helper_path,

meson_options.txt

@@ -7,6 +7,9 @@ option('themes', type: 'boolean', value: true,
 option('ime', type: 'boolean', value: true,
        description: 'IME (Input Method Editor) support')
 
+option('scrollback', type: 'boolean', value: true,
+       description: 'Enable scrollback history. When disabled, the [scrollback] section in foot.ini and the corresponding key bindings become no-ops.')
+
 option('grapheme-clustering', type: 'feature',
        description: 'Enables grapheme clustering using libutf8proc. Requires fcft with harfbuzz support to be useful.')
 

render.c

@@ -1732,8 +1732,10 @@ render_ime_preedit_for_seat(struct terminal *term, struct seat *seat,
     if (likely(seat->ime.preedit.cells == NULL))
         return;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     if (unlikely(term->is_searching))
         return;
+#endif
 
     const bool gamma_correct = wayl_do_linear_blending(term->wl, term->conf);
 
@@ -1975,7 +1977,9 @@ render_overlay(struct terminal *term)
     const bool unicode_mode_active = term->unicode_mode.active;
 
     const enum overlay_style style =
+#if defined(FOOT_HAVE_SCROLLBACK)
         term->is_searching ? OVERLAY_SEARCH :
+#endif
         term->flash.active ? OVERLAY_FLASH :
         unicode_mode_active ? OVERLAY_UNICODE_MODE :
         OVERLAY_NONE;
@@ -1994,7 +1998,9 @@ render_overlay(struct terminal *term)
     pixman_color_t color;
 
     switch (style) {
+#if defined(FOOT_HAVE_SCROLLBACK)
     case OVERLAY_SEARCH:
+#endif
     case OVERLAY_UNICODE_MODE:
         color = (pixman_color_t){0, 0, 0, 0x7fff};
         break;
@@ -2028,6 +2034,7 @@ render_overlay(struct terminal *term)
     /* Bounding rectangle of damaged areas - for wl_surface_damage_buffer() */
     pixman_box32_t damage_bounds;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     if (style == OVERLAY_SEARCH) {
         /*
          * When possible, we only update the areas that have *changed*
@@ -2143,9 +2150,10 @@ render_overlay(struct terminal *term)
         pixman_region32_fini(&new_dimmed);
         pixman_region32_fini(&damage);
     }
-
+    else
-    else if (buf == term->render.last_overlay_buf &&
+#endif /* FOOT_HAVE_SCROLLBACK */
-             style == term->render.last_overlay_style)
+    if (buf == term->render.last_overlay_buf &&
+        style == term->render.last_overlay_style)
     {
         xassert(style == OVERLAY_FLASH || style == OVERLAY_UNICODE_MODE);
         shm_did_not_use_buf(buf);
@@ -2989,6 +2997,7 @@ render_csd(struct terminal *term)
     render_csd_title(term, &infos[CSD_SURF_TITLE], bufs[CSD_SURF_TITLE]);
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static void
 render_scrollback_position(struct terminal *term)
 {
@@ -3139,6 +3148,7 @@ render_scrollback_position(struct terminal *term)
         fg, 0xffu << 24 | bg,
         width - margin - c32len(text) * term->cell_width);
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static void
 render_render_timer(struct terminal *term, struct timespec render_time)
@@ -3612,7 +3622,9 @@ grid_render(struct terminal *term)
 
     render_overlay(term);
     render_ime_preedit(term, buf);
+#if defined(FOOT_HAVE_SCROLLBACK)
     render_scrollback_position(term);
+#endif
 
     if (term->conf->tweak.render_timer != RENDER_TIMER_NONE) {
         struct timespec end_time;
@@ -3716,6 +3728,7 @@ grid_render(struct terminal *term)
     wl_surface_commit(term->window->surface.surf);
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static void
 render_search_box(struct terminal *term)
 {
@@ -4061,6 +4074,7 @@ render_search_box(struct terminal *term)
 #undef WINDOW_X
 #undef WINDOW_Y
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static void
 render_urls(struct terminal *term)
@@ -4319,12 +4333,18 @@ frame_callback(void *data, struct wl_callback *wl_callback, uint32_t callback_da
 
     bool grid = term->render.pending.grid;
     bool csd = term->render.pending.csd;
+#if defined(FOOT_HAVE_SCROLLBACK)
     bool search = term->is_searching && term->render.pending.search;
+#else
+    bool search = false;
+#endif
     bool urls = urls_mode_is_active(term) > 0 && term->render.pending.urls;
 
     term->render.pending.grid = false;
     term->render.pending.csd = false;
+#if defined(FOOT_HAVE_SCROLLBACK)
     term->render.pending.search = false;
+#endif
     term->render.pending.urls = false;
 
     struct grid *original_grid = term->grid;
@@ -4339,8 +4359,10 @@ frame_callback(void *data, struct wl_callback *wl_callback, uint32_t callback_da
         quirk_weston_csd_off(term);
     }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     if (search)
         render_search_box(term);
+#endif
 
     if (urls)
         render_urls(term);
@@ -4689,8 +4711,13 @@ render_resize(struct terminal *term, int width, int height, uint8_t opts)
      * the grid array.
      */
     const unsigned max_scrollback = (INT_MAX >> 1) + 1;
+#if defined(FOOT_HAVE_SCROLLBACK)
+    const uint64_t scrollback_lines = term->render.scrollback_lines;
+#else
+    const uint64_t scrollback_lines = 0;
+#endif
     const unsigned scrollback_lines_not_yet_power_of_two =
-        min((uint64_t)term->render.scrollback_lines + new_rows - 1, max_scrollback);
+        min(scrollback_lines + new_rows - 1, max_scrollback);
 
     /* Grid rows/cols after resize */
     const int new_normal_grid_rows =
@@ -4997,7 +5024,9 @@ damage_view:
     term->render.last_buf = NULL;
     term_damage_view(term);
     render_refresh_csd(term);
+#if defined(FOOT_HAVE_SCROLLBACK)
     render_refresh_search(term);
+#endif
     render_refresh(term);
 
     return true;
@@ -5144,7 +5173,11 @@ fdm_hook_refresh_pending_terminals(struct fdm *fdm, void *data)
 
         bool grid = term->render.refresh.grid;
         bool csd = term->render.refresh.csd;
+#if defined(FOOT_HAVE_SCROLLBACK)
         bool search = term->is_searching && term->render.refresh.search;
+#else
+        bool search = false;
+#endif
         bool urls = urls_mode_is_active(term) && term->render.refresh.urls;
 
         if (!(grid | csd | search | urls))
@@ -5155,7 +5188,9 @@ fdm_hook_refresh_pending_terminals(struct fdm *fdm, void *data)
 
         term->render.refresh.grid = false;
         term->render.refresh.csd = false;
+#if defined(FOOT_HAVE_SCROLLBACK)
         term->render.refresh.search = false;
+#endif
         term->render.refresh.urls = false;
 
         if (term->window->frame_callback == NULL) {
@@ -5170,8 +5205,10 @@ fdm_hook_refresh_pending_terminals(struct fdm *fdm, void *data)
                 render_csd(term);
                 quirk_weston_csd_off(term);
             }
+#if defined(FOOT_HAVE_SCROLLBACK)
             if (search)
                 render_search_box(term);
+#endif
             if (urls)
                 render_urls(term);
             if (grid | csd | search | urls)
@@ -5187,7 +5224,9 @@ fdm_hook_refresh_pending_terminals(struct fdm *fdm, void *data)
             /* Tells the frame callback to render again */
             term->render.pending.grid |= grid;
             term->render.pending.csd |= csd;
+#if defined(FOOT_HAVE_SCROLLBACK)
             term->render.pending.search |= search;
+#endif
             term->render.pending.urls |= urls;
         }
     }
@@ -5305,12 +5344,14 @@ render_refresh_csd(struct terminal *term)
         term->render.refresh.csd = true;
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 void
 render_refresh_search(struct terminal *term)
 {
     if (term->is_searching)
         term->render.refresh.search = true;
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 void
 render_refresh_urls(struct terminal *term)

render.h

@@ -24,7 +24,9 @@ void render_refresh(struct terminal *term);
 void render_refresh_app_id(struct terminal *term);
 void render_refresh_icon(struct terminal *term);
 void render_refresh_csd(struct terminal *term);
+#if defined(FOOT_HAVE_SCROLLBACK)
 void render_refresh_search(struct terminal *term);
+#endif
 void render_refresh_title(struct terminal *term);
 void render_refresh_urls(struct terminal *term);
 bool render_xcursor_set(

search.c

@@ -1,5 +1,7 @@
 #include "search.h"
 
+#if defined(FOOT_HAVE_SCROLLBACK)
+
 #include <string.h>
 
 #include <wayland-client.h>
@@ -1510,3 +1512,5 @@ update_search:
     if (redraw)
         render_refresh_search(term);
 }
+
+#endif /* FOOT_HAVE_SCROLLBACK */

search.h

@@ -5,6 +5,7 @@
 #include "key-binding.h"
 #include "terminal.h"
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 void search_begin(struct terminal *term);
 void search_cancel(struct terminal *term);
 void search_input(
@@ -24,3 +25,4 @@ struct search_match_iterator {
 
 struct search_match_iterator search_matches_new_iter(struct terminal *term);
 struct range search_matches_next(struct search_match_iterator *iter);
+#endif /* FOOT_HAVE_SCROLLBACK */

selection.c

@@ -1549,7 +1549,9 @@ selection_finalize(struct seat *seat, struct terminal *term, uint32_t serial)
 
     LOG_DBG("selection finalize");
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     selection_stop_scroll_timer(term);
+#endif
     term->selection.ongoing = false;
 
     if (term->selection.coords.start.row < 0 || term->selection.coords.end.row < 0)
@@ -1599,7 +1601,9 @@ selection_cancel(struct terminal *term)
             term->selection.coords.start.row, term->selection.coords.start.col,
             term->selection.coords.end.row, term->selection.coords.end.col);
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     selection_stop_scroll_timer(term);
+#endif
 
     if (term->selection.coords.start.row >= 0 && term->selection.coords.end.row >= 0) {
         foreach_selected(
@@ -1616,7 +1620,9 @@ selection_cancel(struct terminal *term)
     term->selection.direction = SELECTION_UNDIR;
     term->selection.ongoing = false;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     search_selection_cancelled(term);
+#endif
 }
 
 bool
@@ -1671,6 +1677,7 @@ selection_primary_unset(struct seat *seat)
     primary->text = NULL;
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static bool
 fdm_scroll_timer(struct fdm *fdm, int fd, int events, void *data)
 {
@@ -1773,6 +1780,7 @@ selection_stop_scroll_timer(struct terminal *term)
     term->selection.auto_scroll.fd = -1;
     term->selection.auto_scroll.direction = SELECTION_SCROLL_NOT;
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static void
 target(void *data, struct wl_data_source *wl_data_source, const char *mime_type)

selection.h

@@ -72,10 +72,12 @@ void text_from_primary(
     void (*cb)(char *data, size_t size, void *user),
     void (*dont)(void *user), void *user);
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 void selection_start_scroll_timer(
     struct terminal *term, int interval_ns,
     enum selection_scroll_direction direction, int col);
 void selection_stop_scroll_timer(struct terminal *term);
+#endif
 
 void selection_find_word_boundary_left(
     const struct terminal *term, struct coord *pos, bool spaces_only);

terminal.c

@@ -1344,9 +1344,11 @@ term_init(const struct config *conf, struct fdm *fdm, struct reaper *reaper,
                 .start = {-1, -1},
                 .end = {-1, -1},
             },
+#if defined(FOOT_HAVE_SCROLLBACK)
             .auto_scroll = {
                 .fd = -1,
             },
+#endif
         },
         .normal = {.scroll_damage = tll_init(), .sixel_images = tll_init()},
         .alt = {.scroll_damage = tll_init(), .sixel_images = tll_init()},
@@ -1365,14 +1367,18 @@ term_init(const struct config *conf, struct fdm *fdm, struct reaper *reaper,
             .chains = {
                 .grid = shm_chain_new(wayl, true, 1 + conf->render_worker_count,
                                       desired_bit_depth, &render_buffer_release_callback, term),
+#if defined(FOOT_HAVE_SCROLLBACK)
                 .search = shm_chain_new(wayl, false, 1 ,desired_bit_depth, NULL, NULL),
                 .scrollback_indicator = shm_chain_new(wayl, false, 1, desired_bit_depth, NULL, NULL),
+#endif
                 .render_timer = shm_chain_new(wayl, false, 1, desired_bit_depth, NULL, NULL),
                 .url = shm_chain_new(wayl, false, 1, desired_bit_depth, NULL, NULL),
                 .csd = shm_chain_new(wayl, false, 1, desired_bit_depth, NULL, NULL),
                 .overlay = shm_chain_new(wayl, false, 1, desired_bit_depth, NULL, NULL),
             },
+#if defined(FOOT_HAVE_SCROLLBACK)
             .scrollback_lines = conf->scrollback.lines,
+#endif
             .app_sync_updates.timer_fd = app_sync_updates_fd,
             .title = {
                 .timer_fd = title_update_fd,
@@ -1718,7 +1724,9 @@ term_shutdown(struct terminal *term)
     term_cursor_blink_update(term);
     xassert(term->cursor_blink.fd < 0);
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     fdm_del(term->fdm, term->selection.auto_scroll.fd);
+#endif
     fdm_del(term->fdm, term->render.app_sync_updates.timer_fd);
     fdm_del(term->fdm, term->render.app_id.timer_fd);
     fdm_del(term->fdm, term->render.icon.timer_fd);
@@ -1770,7 +1778,9 @@ term_shutdown(struct terminal *term)
         }
     }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     term->selection.auto_scroll.fd = -1;
+#endif
     term->render.app_sync_updates.timer_fd = -1;
     term->render.app_id.timer_fd = -1;
     term->render.icon.timer_fd = -1;
@@ -1825,7 +1835,9 @@ term_destroy(struct terminal *term)
 
     del_utmp_record(term->conf, term->reaper, term->ptmx);
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     fdm_del(term->fdm, term->selection.auto_scroll.fd);
+#endif
     fdm_del(term->fdm, term->render.app_sync_updates.timer_fd);
     fdm_del(term->fdm, term->render.app_id.timer_fd);
     fdm_del(term->fdm, term->render.icon.timer_fd);
@@ -1891,8 +1903,10 @@ term_destroy(struct terminal *term)
     free_custom_glyphs(
         &term->custom_glyphs.octants, GLYPH_OCTANTS_COUNT);
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     free(term->search.buf);
     free(term->search.last.buf);
+#endif
 
     if (term->render.workers.threads != NULL) {
         for (size_t i = 0; i < term->render.workers.count; i++) {
@@ -1911,8 +1925,10 @@ term_destroy(struct terminal *term)
 
     shm_unref(term->render.last_buf);
     shm_chain_free(term->render.chains.grid);
+#if defined(FOOT_HAVE_SCROLLBACK)
     shm_chain_free(term->render.chains.search);
     shm_chain_free(term->render.chains.scrollback_indicator);
+#endif
     shm_chain_free(term->render.chains.render_timer);
     shm_chain_free(term->render.chains.url);
     shm_chain_free(term->render.chains.csd);
@@ -2680,6 +2696,7 @@ term_erase(struct terminal *term, int start_row, int start_col,
     sixel_overwrite_by_row(term, end_row, 0, end_col + 1);
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 void
 term_erase_scrollback(struct terminal *term)
 {
@@ -2766,7 +2783,6 @@ term_erase_scrollback(struct terminal *term)
 
     term_damage_view(term);
 }
-
 UNITTEST
 {
     const int scrollback_rows = 16;
@@ -2893,6 +2909,7 @@ UNITTEST
     free(term.normal.rows);
     fdm_destroy(fdm);
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 int
 term_row_rel_to_abs(const struct terminal *term, int row)
@@ -3086,9 +3103,11 @@ term_scroll_partial(struct terminal *term, struct scroll_region region, int rows
 
     sixel_scroll_up(term, rows);
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     /* How many lines from the scrollback start is the current viewport? */
     int view_sb_start_distance = grid_row_abs_to_sb(
         term->grid, term->rows, term->grid->view);
+#endif
 
     bool view_follows = term->grid->view == term->grid->offset;
     term->grid->offset += rows;
@@ -3098,12 +3117,15 @@ term_scroll_partial(struct terminal *term, struct scroll_region region, int rows
         term_damage_scroll(term, DAMAGE_SCROLL, region, rows);
         selection_view_down(term, term->grid->offset);
         term->grid->view = term->grid->offset;
-    } else if (unlikely(rows > view_sb_start_distance)) {
+    }
+#if defined(FOOT_HAVE_SCROLLBACK)
+    else if (unlikely(rows > view_sb_start_distance)) {
         /* Part of current view is being scrolled out */
         int new_view = grid_row_sb_to_abs(term->grid, term->rows, 0);
         selection_view_down(term, new_view);
         cmd_scrollback_down(term, rows - view_sb_start_distance);
     }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     /* Top non-scrolling region. */
     for (int i = region.start - 1; i >= 0; i--)
@@ -3834,8 +3856,11 @@ term_enable_app_sync_updates(struct terminal *term)
 
     /* Disable pending refresh *iff* the grid is the *only* thing
      * scheduled to be re-rendered */
-    if (!term->render.refresh.csd && !term->render.refresh.search &&
+    if (!term->render.refresh.csd &&
-        !term->render.pending.csd && !term->render.pending.search)
+#if defined(FOOT_HAVE_SCROLLBACK)
+        !term->render.refresh.search && !term->render.pending.search &&
+#endif
+        !term->render.pending.csd)
     {
         term->render.refresh.grid = false;
         term->render.pending.grid = false;
@@ -4487,6 +4512,7 @@ out:
     return extract_finish(ctx, text, len);
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 bool
 term_scrollback_to_text(const struct terminal *term, char **text, size_t *len)
 {
@@ -4514,6 +4540,7 @@ term_scrollback_to_text(const struct terminal *term, char **text, size_t *len)
 
     return rows_to_text(term, start, end, 0, term->cols, text, len);
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 bool
 term_view_to_text(const struct terminal *term, char **text, size_t *len)

terminal.h

@@ -341,8 +341,10 @@ enum selection_kind {
     SELECTION_BLOCK
 };
 enum selection_direction {SELECTION_UNDIR, SELECTION_LEFT, SELECTION_RIGHT};
+#if defined(FOOT_HAVE_SCROLLBACK)
 enum selection_scroll_direction {SELECTION_SCROLL_NOT, SELECTION_SCROLL_UP, SELECTION_SCROLL_DOWN};
 enum search_direction { SEARCH_BACKWARD_SAME_POSITION, SEARCH_BACKWARD, SEARCH_FORWARD };
+#endif
 
 struct ptmx_buffer {
     void *data;
@@ -365,7 +367,9 @@ enum term_surface {
 
 enum overlay_style {
     OVERLAY_NONE,
+#if defined(FOOT_HAVE_SCROLLBACK)
     OVERLAY_SEARCH,
+#endif
     OVERLAY_FLASH,
     OVERLAY_UNICODE_MODE,
 };
@@ -605,13 +609,16 @@ struct terminal {
 
         struct range pivot;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
         struct {
             int fd;
             int col;
             enum selection_scroll_direction direction;
         } auto_scroll;
+#endif
     } selection;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     bool is_searching;
     struct {
         char32_t *buf;
@@ -629,6 +636,7 @@ struct terminal {
             size_t len;
         } last;
     } search;
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     struct wayland *wl;
     struct wl_window *window;
@@ -639,8 +647,10 @@ struct terminal {
     struct {
         struct {
             struct buffer_chain *grid;
+#if defined(FOOT_HAVE_SCROLLBACK)
             struct buffer_chain *search;
             struct buffer_chain *scrollback_indicator;
+#endif
             struct buffer_chain *render_timer;
             struct buffer_chain *url;
             struct buffer_chain *csd;
@@ -651,7 +661,9 @@ struct terminal {
         struct {
             bool grid;
             bool csd;
+#if defined(FOOT_HAVE_SCROLLBACK)
             bool search;
+#endif
             bool urls;
         } refresh;
 
@@ -659,7 +671,9 @@ struct terminal {
         struct {
             bool grid;
             bool csd;
+#if defined(FOOT_HAVE_SCROLLBACK)
             bool search;
+#endif
             bool urls;
         } pending;
 
@@ -681,7 +695,9 @@ struct terminal {
             int timer_fd;
         } app_id;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
         uint32_t scrollback_lines; /* Number of scrollback lines, from conf (TODO: move out from render struct?) */
+#endif
 
         struct {
             bool enabled;
@@ -722,7 +738,9 @@ struct terminal {
         struct buffer *last_overlay_buf;
         pixman_region32_t last_overlay_clip;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
         size_t search_glyph_offset;
+#endif
 
         struct timespec input_time;
     } render;
@@ -889,7 +907,9 @@ void term_erase(
     struct terminal *term,
     int start_row, int start_col,
     int end_row, int end_col);
+#if defined(FOOT_HAVE_SCROLLBACK)
 void term_erase_scrollback(struct terminal *term);
+#endif
 
 int term_row_rel_to_abs(const struct terminal *term, int row);
 void term_cursor_home(struct terminal *term);
@@ -958,8 +978,10 @@ void term_disable_app_sync_updates(struct terminal *term);
 enum term_surface term_surface_kind(
     const struct terminal *term, const struct wl_surface *surface);
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 bool term_scrollback_to_text(
     const struct terminal *term, char **text, size_t *len);
+#endif
 bool term_view_to_text(
     const struct terminal *term, char **text, size_t *len);
 bool term_command_output_to_text(

tests/test-config.c

@@ -590,6 +590,7 @@ test_section_desktop_notifications(void)
     config_free(&conf);
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static void
 test_section_scrollback(void)
 {
@@ -616,6 +617,7 @@ test_section_scrollback(void)
 
     config_free(&conf);
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static void
 test_section_url(void)
@@ -747,6 +749,7 @@ test_section_colors_dark(void)
     test_two_colors(&ctx, &parse_section_colors_dark, "jump-labels", false,
                     &conf.colors_dark.jump_label.fg,
                     &conf.colors_dark.jump_label.bg);
+#if defined(FOOT_HAVE_SCROLLBACK)
     test_two_colors(&ctx, &parse_section_colors_dark, "scrollback-indicator", false,
                     &conf.colors_dark.scrollback_indicator.fg,
                     &conf.colors_dark.scrollback_indicator.bg);
@@ -756,6 +759,7 @@ test_section_colors_dark(void)
     test_two_colors(&ctx, &parse_section_colors_dark, "search-box-match", false,
                     &conf.colors_dark.search_box.match.fg,
                     &conf.colors_dark.search_box.match.bg);
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     test_two_colors(&ctx, &parse_section_colors_dark, "cursor", false,
                     &conf.colors_dark.cursor.text,
@@ -828,6 +832,7 @@ test_section_colors_light(void)
     test_two_colors(&ctx, &parse_section_colors_light, "jump-labels", false,
                     &conf.colors_light.jump_label.fg,
                     &conf.colors_light.jump_label.bg);
+#if defined(FOOT_HAVE_SCROLLBACK)
     test_two_colors(&ctx, &parse_section_colors_light, "scrollback-indicator", false,
                     &conf.colors_light.scrollback_indicator.fg,
                     &conf.colors_light.scrollback_indicator.bg);
@@ -837,6 +842,7 @@ test_section_colors_light(void)
     test_two_colors(&ctx, &parse_section_colors_light, "search-box-match", false,
                     &conf.colors_light.search_box.match.fg,
                     &conf.colors_light.search_box.match.bg);
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     test_two_colors(&ctx, &parse_section_colors_light, "cursor", false,
                     &conf.colors_light.cursor.text,
@@ -1239,7 +1245,7 @@ test_section_key_bindings(void)
             &ctx, &parse_section_key_bindings,
             action, BIND_ACTION_KEY_COUNT - 1,
             binding_action_map, &conf.bindings.key, KEY_BINDING,
-            action >= BIND_ACTION_PIPE_SCROLLBACK && action <= BIND_ACTION_PIPE_COMMAND_OUTPUT,
+            action >= BIND_ACTION_PIPE_FIRST && action <= BIND_ACTION_PIPE_LAST,
             action >= BIND_ACTION_REGEX_LAUNCH && action <= BIND_ACTION_REGEX_COPY);
     }
 
@@ -1259,6 +1265,7 @@ test_section_key_bindings_collisions(void)
     config_free(&conf);
 }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
 static void
 test_section_search_bindings(void)
 {
@@ -1295,6 +1302,7 @@ test_section_search_bindings_collisions(void)
 
     config_free(&conf);
 }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
 static void
 test_section_url_bindings(void)
@@ -1534,7 +1542,9 @@ main(int argc, const char *const *argv)
     test_section_security();
     test_section_bell();
     test_section_desktop_notifications();
+#if defined(FOOT_HAVE_SCROLLBACK)
     test_section_scrollback();
+#endif
     test_section_url();
     test_section_cursor();
     test_section_mouse();
@@ -1544,8 +1554,10 @@ main(int argc, const char *const *argv)
     test_section_csd();
     test_section_key_bindings();
     test_section_key_bindings_collisions();
+#if defined(FOOT_HAVE_SCROLLBACK)
     test_section_search_bindings();
     test_section_search_bindings_collisions();
+#endif
     test_section_url_bindings();
     test_section_url_bindings_collisions();
     test_section_mouse_bindings();

unicode-mode.c

@@ -34,10 +34,14 @@ unicode_mode_updated(struct terminal *term)
     if (term == NULL)
         return;
 
-    if (term->is_searching)
+#if defined(FOOT_HAVE_SCROLLBACK)
+    if (term->is_searching) {
         render_refresh_search(term);
-    else
+    } else
+#endif
+    {
         render_refresh(term);
+    }
 }
 
 void
@@ -57,10 +61,14 @@ unicode_mode_input(struct seat *seat, struct terminal *term,
                 term->unicode_mode.character, (int)chars, utf8);
 
         if (chars != (size_t)-1) {
-            if (term->is_searching)
+#if defined(FOOT_HAVE_SCROLLBACK)
+            if (term->is_searching) {
                 search_add_chars(term, utf8, chars);
-            else
+            } else
+#endif
+            {
                 term_to_slave(term, utf8, chars);
+            }
         }
 
         seat->kbd.last_shortcut_sym = sym;

wayland.c

@@ -2210,6 +2210,7 @@ wayl_win_destroy(struct wl_window *win)
         wl_surface_commit(win->render_timer.surface.surf);
     }
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     if (win->scrollback_indicator.surface.surf != NULL) {
         wl_surface_attach(win->scrollback_indicator.surface.surf, NULL, 0, 0);
         wl_surface_commit(win->scrollback_indicator.surface.surf);
@@ -2220,6 +2221,7 @@ wayl_win_destroy(struct wl_window *win)
         wl_surface_attach(win->search.surface.surf, NULL, 0, 0);
         wl_surface_commit(win->search.surface.surf);
     }
+#endif /* FOOT_HAVE_SCROLLBACK */
 
     /* URLs */
     tll_foreach(win->urls, it) {
@@ -2253,13 +2255,17 @@ wayl_win_destroy(struct wl_window *win)
     render_wait_for_preapply_damage(term);
 
     csd_destroy(win);
+#if defined(FOOT_HAVE_SCROLLBACK)
     wayl_win_subsurface_destroy(&win->search);
     wayl_win_subsurface_destroy(&win->scrollback_indicator);
+#endif
     wayl_win_subsurface_destroy(&win->render_timer);
     wayl_win_subsurface_destroy(&win->overlay);
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     shm_purge(term->render.chains.search);
     shm_purge(term->render.chains.scrollback_indicator);
+#endif
     shm_purge(term->render.chains.render_timer);
     shm_purge(term->render.chains.grid);
     shm_purge(term->render.chains.url);

wayland.h

@@ -397,8 +397,10 @@ struct wl_window {
         bool minimize:1;
     } wm_capabilities;
 
+#if defined(FOOT_HAVE_SCROLLBACK)
     struct wayl_sub_surface search;
     struct wayl_sub_surface scrollback_indicator;
+#endif
     struct wayl_sub_surface render_timer;
     struct wayl_sub_surface overlay;