Add support for custom formatting (#57)

Add the ability to overwrite the formatting by setting the automatic-rename-format option with the `#{window_icon}`

Co-authored-by: Copilot <[email protected]>

Author: HT2Knock

README.md

@@ -40,6 +40,17 @@ icons:
   cmatrix: "🤯" # add new entries that aren't included
 ```
 
+### Custom Placeholder Support
+
+If you prefer to define your own `automatic-rename-format`,
+you can include a placeholder that lets this plugin inject its icon output.
+
+For example:
+
+```tmux
+set -g automatic-rename-format "#{window_icon} #{b:pane_current_path}"
+```
+
 ## Contributions
 
 Contributions are welcome! Feel free to make a pull request to submit more

tmux-nerd-font-window-name.tmux

@@ -1,4 +1,15 @@
 #!/usr/bin/env bash
 
 CURRENT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-tmux set-option -g automatic-rename-format "#($CURRENT_DIR/bin/tmux-nerd-font-window-name #{pane_current_command} #{window_panes})"
+
+plugin_format="#($CURRENT_DIR/bin/tmux-nerd-font-window-name #{pane_current_command} #{window_panes})"
+user_format="$(tmux show-option -gv automatic-rename-format 2>/dev/null)"
+placeholder="#{window_icon}"
+
+if [[ -n "$user_format" && "$user_format" == *"$placeholder"* ]]; then
+    new_format="${user_format//$placeholder/$plugin_format}"
+else
+    new_format="$plugin_format"
+fi
+
+tmux set-option -g automatic-rename-format "$new_format"