add git branch and status to example laptop shell prompt

Signed-off-by: Ava Hahn <ava@sunnypup.io>

snippets/avas-laptop-prompt.rls

@@ -72,11 +72,32 @@
           (inc i))
         (concat "..." final)))))
 
+(def in-a-git-repo?
+'returns true or false depending on if currently in a git repo'
+  () (eq? (load-to-string git rev-parse --is-inside-work-tree) "true"))
+
+(def git-repo-is-dirty?
+'returns true or false depending on if current dir is a dirty git repo'
+  () (not (eq? (load-to-string git diff '--stat') "")))
+
+(def git-status 'returns "(git:<branch>(!))" if dir is in a git repository'
+  ()
+  (if (in-a-git-repo?)
+    (concat
+      "(git:"
+      (load-to-string git rev-parse --abbrev-ref HEAD)
+      (if (git-repo-is-dirty?)
+        "!"
+        "")
+      ")")
+    ''))
+
 (def CFG_RELISH_L_PROMPT 'display user and dir (git info in future)'
  ()
  (concat
-   "[" USER "] "
-   (_fancy-cwd) " "
+   "[" USER "]" "\t"
+   (_fancy-cwd) "\t"
+   (git-status) "\t"
    ;; add more prompt elements here
    "\n" ;; newline before delimiter
   ))