config: add 'blink' option to cursor section in footrc

This option controls whether the default cursor should blink or
not. The default is to *not* blink.

CHANGELOG.md

@@ -19,6 +19,9 @@
 * Terminfo entries for keypad keys: `ka1`, `ka2`, `ka3`, `kb1`, `kb3`,
   `kc1`, `kc2`, `kc3`, `kp5`, `kpADD`, `kpCMA`, `kpDIV`, `kpDOT`,
   `kpMUL`, `kpSUB` and `kpZRO`.
+* **blink** option to `footrc`; a boolean that lets you control
+    whether the cursor should blink or not by default. Note that
+    applications can override this.
 
 
 ### Changed
@@ -108,6 +111,7 @@
   `11t`, `13t`, `13;2t`, `14t`, `14;2t`, `15t`, `19t`.
 * Unicode combining characters.
 
+
 ### Changed
 
 * Spaces no longer removed from zsh font name completions.

config.c

@@ -363,6 +363,9 @@ parse_section_cursor(const char *key, const char *value, struct config *conf,
         }
     }
 
+    else if (strcmp(key, "blink") == 0)
+        conf->cursor.blink = str_to_bool(value);
+
     else if (strcmp(key, "color") == 0) {
         char *value_copy = strdup(value);
         const char *text = strtok(value_copy, " ");
@@ -873,6 +876,7 @@ config_load(struct config *conf, const char *conf_path)
 
         .cursor = {
             .style = CURSOR_BLOCK,
+            .blink = false,
             .color = {
                 .text = 0,
                 .cursor = 0,

config.h

@@ -33,6 +33,7 @@ struct config {
 
     struct {
         enum cursor_style style;
+        bool blink;
         struct {
             uint32_t text;
             uint32_t cursor;

doc/foot.5.scd

@@ -81,7 +81,12 @@ applications can change these runtime.
 
 *style*
 	Configures the default cursor style, and is one of: _block_, _bar_
-	or _underline_. Default: _block_.
+	or _underline_. Note that this can be overridden by
+	applications. Default: _block_.
+
+*blink*
+	Boolean. Enables blinking cursor. Note that this can be overridden
+	by applications. Default: _no_.
 
 *color*
 	Two RRGGBB values specifying the foreground (text) and background

footrc

@@ -13,6 +13,7 @@
 [cursor]
 # style=block
 # color=111111 dcdccc
+# blink=no
 
 [colors]
 # alpha=1.0

terminal.c

@@ -844,10 +844,11 @@ term_init(const struct config *conf, struct fdm *fdm, struct reaper *reaper,
             .alpha = conf->colors.alpha,
         },
         .origin = ORIGIN_ABSOLUTE,
+        .default_cursor_blink = conf->cursor.blink,
         .default_cursor_style = conf->cursor.style,
         .cursor_style = conf->cursor.style,
         .cursor_blink = {
-            .active = false,
+            .active = conf->cursor.blink,
             .state = CURSOR_BLINK_ON,
             .fd = cursor_blink_fd,
         },

terminal.h

@@ -296,6 +296,7 @@ struct terminal {
         enum { CURSOR_BLINK_ON, CURSOR_BLINK_OFF } state;
         int fd;
     } cursor_blink;
+    bool default_cursor_blink;
     struct {
         uint32_t text;
         uint32_t cursor;