config: add search-bindings.delete-to-{start,end} key bindings

Defaults to ctrl+u and ctrl+k respectively.

Closes #1972

CHANGELOG.md

@@ -69,10 +69,14 @@
   [#1872][1872])
 * Support for kitty's text-sizing protocol (`w`, width, only), OSC-66.
 * `cursor.style` can now be set to `hollow` ([#1965][1965]).
+* `search-bindings.delete-to-start` and
+  `search-bindings.delete-to-end` key bindings, defaulting to
+  `Control+u` and `Control+k` respectively ([#1972][1972]).
 
 [1386]: https://codeberg.org/dnkl/foot/issues/1386
 [1872]: https://codeberg.org/dnkl/foot/issues/1872
 [1965]: https://codeberg.org/dnkl/foot/issues/1965
+[1972]: https://codeberg.org/dnkl/foot/issues/1972
 
 
 ### Changed

config.c

@@ -180,6 +180,8 @@ static const char *const search_binding_action_map[] = {
     [BIND_ACTION_SEARCH_DELETE_PREV_WORD] = "delete-prev-word",
     [BIND_ACTION_SEARCH_DELETE_NEXT] = "delete-next",
     [BIND_ACTION_SEARCH_DELETE_NEXT_WORD] = "delete-next-word",
+    [BIND_ACTION_SEARCH_DELETE_TO_START] = "delete-to-start",
+    [BIND_ACTION_SEARCH_DELETE_TO_END] = "delete-to-end",
     [BIND_ACTION_SEARCH_EXTEND_CHAR] = "extend-char",
     [BIND_ACTION_SEARCH_EXTEND_WORD] = "extend-to-word-boundary",
     [BIND_ACTION_SEARCH_EXTEND_WORD_WS] = "extend-to-next-whitespace",
@@ -3183,6 +3185,8 @@ add_default_search_bindings(struct config *conf)
         {BIND_ACTION_SEARCH_DELETE_NEXT, m("none"), {{XKB_KEY_Delete}}},
         {BIND_ACTION_SEARCH_DELETE_NEXT_WORD, m(XKB_MOD_NAME_CTRL), {{XKB_KEY_Delete}}},
         {BIND_ACTION_SEARCH_DELETE_NEXT_WORD, m(XKB_MOD_NAME_ALT), {{XKB_KEY_d}}},
+        {BIND_ACTION_SEARCH_DELETE_TO_START, m(XKB_MOD_NAME_CTRL), {{XKB_KEY_u}}},
+        {BIND_ACTION_SEARCH_DELETE_TO_END, m(XKB_MOD_NAME_CTRL), {{XKB_KEY_k}}},
         {BIND_ACTION_SEARCH_EXTEND_CHAR, m(XKB_MOD_NAME_SHIFT), {{XKB_KEY_Right}}},
         {BIND_ACTION_SEARCH_EXTEND_WORD, m(XKB_MOD_NAME_CTRL "+" XKB_MOD_NAME_SHIFT), {{XKB_KEY_Right}}},
         {BIND_ACTION_SEARCH_EXTEND_WORD, m(XKB_MOD_NAME_CTRL), {{XKB_KEY_w}}},

doc/foot.1.scd

@@ -301,6 +301,12 @@ These shortcuts affect the search box in scrollback-search mode:
 *alt*+*delete*, *ctrl*+*delete*
 	Deletes the **word after** the cursor.
 
+*ctrl*+*u*
+	Deletes from the cursor to the start of the input
+
+*ctrl*+*k*
+	Deletes from the cursor to the end of the input
+
 These shortcuts affect scrolling in scrollback-search mode:
 
 *shift*+*page-up*

doc/foot.ini.5.scd

@@ -1401,6 +1401,12 @@ scrollback search mode. The syntax is exactly the same as the regular
 	Deletes the **word after** the cursor. Default: _Mod1+d
 	Control+Delete_.
 
+*delete-to-start*
+	Deletes search input before the cursor. Default: _Ctrl+u_.
+
+*delete-to-end*
+	Deletes search input after the cursor. Default: _Ctrl+k_.
+
 *extend-char*
 	Extend current selection to the right, by one character. Default:
 	_Shift+Right_.

foot.ini

@@ -225,6 +225,8 @@
 # delete-prev-word=Mod1+BackSpace Control+BackSpace
 # delete-next=Delete
 # delete-next-word=Mod1+d Control+Delete
+# delete-to-start=Control+u
+# delete-to-end=Control+k
 # extend-char=Shift+Right
 # extend-to-word-boundary=Control+w Control+Shift+Right
 # extend-to-next-whitespace=Control+Shift+w

key-binding.h

@@ -84,6 +84,8 @@ enum bind_action_search {
     BIND_ACTION_SEARCH_DELETE_PREV_WORD,
     BIND_ACTION_SEARCH_DELETE_NEXT,
     BIND_ACTION_SEARCH_DELETE_NEXT_WORD,
+    BIND_ACTION_SEARCH_DELETE_TO_START,
+    BIND_ACTION_SEARCH_DELETE_TO_END,
     BIND_ACTION_SEARCH_EXTEND_CHAR,
     BIND_ACTION_SEARCH_EXTEND_WORD,
     BIND_ACTION_SEARCH_EXTEND_WORD_WS,

search.c

@@ -1265,6 +1265,29 @@ execute_binding(struct seat *seat, struct terminal *term,
         return true;
     }
 
+    case BIND_ACTION_SEARCH_DELETE_TO_START: {
+        if (term->search.cursor > 0) {
+            memmove(&term->search.buf[0],
+                    &term->search.buf[term->search.cursor],
+                    (term->search.len - term->search.cursor)
+                        * sizeof(char32_t));
+
+            term->search.len -= term->search.cursor;
+            term->search.cursor = 0;
+            *update_search_result = *redraw = true;
+        }
+        return true;
+    }
+
+    case BIND_ACTION_SEARCH_DELETE_TO_END: {
+        if (term->search.cursor < term->search.len) {
+            term->search.buf[term->search.cursor] = '\0';
+            term->search.len = term->search.cursor;
+            *update_search_result = *redraw = true;
+        }
+        return true;
+    }
+
     case BIND_ACTION_SEARCH_EXTEND_CHAR: {
         struct coord target;
         if (search_extend_find_char_right(term, &target)) {