diff --git a/lib/mercurial.zsh b/lib/mercurial.zsh
new file mode 100644
index 000000000..4930eab19
--- /dev/null
+++ b/lib/mercurial.zsh
@@ -0,0 +1,7 @@
+function hg_prompt_info() {
+  branch=$(hg id -b 2> /dev/null) || return
+  tag=$(hg id -t 2> /dev/null) || return
+  rev_number=$(hg id -n 2> /dev/null) || return
+  rev_id=$(hg id -i 2> /dev/null) || return
+  echo "${ZSH_THEME_HG_PROMPT_PREFIX}${rev_number/\+/}:${rev_id/\+/}@${branch}(${tag})${ZSH_THEME_HG_PROMPT_SUFFIX}"
+}
\ No newline at end of file