添加 proxy 函数设置 HTTP 代理

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

fish/add-on.fish

@@ -139,4 +139,19 @@ abbr -a port 'sudo ss -tulnp | grep'
 abbr -a process 'sudo ps aux | grep'
 abbr -a service 'sudo systemctl list-units --type=service --all | grep'
 
-alias fastfetch="fastfetch --color-keys blue"
+alias fastfetch="fastfetch --color-keys blue"
+
+function proxy --description 'Set HTTP proxy for current session'
+    echo -n "HTTP proxy address (e.g. http://192.168.5.14:6152): "
+    read proxy_addr
+
+    if test -n "$proxy_addr"
+        set -gx HTTP_PROXY "$proxy_addr"
+        set -gx HTTPS_PROXY "$proxy_addr"
+        echo "Proxy set: $proxy_addr"
+    else
+        echo "Proxy cleared"
+        set -e HTTP_PROXY
+        set -e HTTPS_PROXY
+    end
+end