fix: toggle-resion

fish/functions/region.fish

@@ -0,0 +1,58 @@
+# CN_REGION 读写 ~/.config/fish/custom.fish（与 script/common/region.sh 约定一致）
+
+function region_custom_path
+    echo ~/.config/fish/custom.fish
+end
+
+function region_read
+    set -l path (region_custom_path)
+    if test -f $path
+        set -l matches (grep -E '^\s*set\s+-gx\s+CN_REGION\s+' $path 2>/dev/null)
+        if test (count $matches) -gt 0
+            set -l line $matches[-1]
+            echo (string trim (string replace -r '.*\s' '' $line))
+            return
+        end
+    end
+    if set -q CN_REGION
+        echo $CN_REGION
+    else
+        echo 0
+    end
+end
+
+function region_write
+    set -l new $argv[1]
+    set -l path (region_custom_path)
+    mkdir -p (dirname $path)
+
+    set -l tmp (mktemp)
+    if test -f $path
+        grep -Ev '^\s*# dotfile: CN_REGION|^\s*set\s+-gx\s+CN_REGION\s+' $path >$tmp 2>/dev/null; or true
+    else
+        touch $tmp
+    end
+    echo "# dotfile: CN_REGION (managed by ff region / toggle-region)" >>$tmp
+    echo "set -gx CN_REGION $new" >>$tmp
+    mv $tmp $path
+
+    set -gx CN_REGION $new
+end
+
+function region_toggle
+    set -l current (region_read)
+    set -l new
+    if test "$current" = "1"
+        set new 0
+        echo "Switched to: 0 (国外)"
+    else
+        set new 1
+        echo "Switched to: 1 (国内)"
+    end
+    region_write $new
+    echo "Persisted to ~/.config/fish/custom.fish"
+end
+
+function region_apply_from_custom
+    set -gx CN_REGION (region_read)
+end