Add superfast way to detect if the branch is dirty

prompt.zsh

@@ -3,19 +3,42 @@
 # https://github.com/sindresorhus/pure/
 # MIT License
 
+
+# Change this to your own username
 local default_username='sindresorhus'
 
+
+# For my own and others sanity
+# git:
+# %b => current branch
+# %a => current action (rebase/merge)
+# prompt:
+# %F => color dict
+# %f => reset color
+# %~ => current path
+# %* => time
+# %n => username
+# %m => shortname host
+# %(?..) => prompt conditional - %(condition.true.false)
+
+autoload -Uz vcs_info
+zstyle ':vcs_info:*' enable git # You can add hg too if needed: `git hg`
+zstyle ':vcs_info:git*' formats ' %b'
+zstyle ':vcs_info:git*' actionformats ' %b|%a'
+
 # Only show username if not default
-username() {
-	if [ $USER != $default_username ]; then echo '%n@%m '; fi
+[ $USER != $default_username ] && local username='%n@%m '
+
+# Fastest possible way to check if repo is dirty
+git_dirty() {
+	git diff --quiet --ignore-submodules HEAD 2>/dev/null; [ $? -eq 1 ] && echo '*'
 }
 
-git_branch() {
-	echo `git symbolic-ref --short -q HEAD 2>/dev/null`
-}
 
 precmd() {
-	print -P '\n%F{blue}%~%f %F{236}`git_branch` `username`%*%f'
+	vcs_info
+	# Remove `%*` to hide the time
+	print -P '\n%F{blue}%~%F{236}$vcs_info_msg_0_ $username%*%f'
 }
 
 # Turns the prompt red if the last command exited with 0