[helm] Created spacemacs/helm-dir-do-grep to fix issue #13167

This is used if someone does not have ag, pt, rgrep, etc.

CHANGELOG.develop

@@ -1981,6 +1981,7 @@ Other:
     Helm-ag (thanks to duianto and Miciah Masters)
   - Fixed searching in a project with ~C-s~ from ~SPC p p~ (thanks to duianto)
   - Fixed ~C-c C-e~ =helm-find-files-edit= action (thanks to duianto)
+  - Added =spacemacs/helm-dir-do-grep= to fix #13167 (thanks to Richard Kim)
 **** HTML
 - Added =impatient-mode= under ~SPC m i~ (thanks to geo7)
 - Added =counsel-css= as an =ivy= alternative to =helm-css-scss=

layers/+completion/helm/funcs.el

@@ -209,6 +209,11 @@ If DEFAULT-INPUTP is non nil then the current region or symbol at point
   (interactive)
   (spacemacs/helm-files-do-ack default-directory))
 
+(defun spacemacs/helm-dir-do-grep ()
+  "Search in current directory with `grep'."
+  (interactive)
+  (spacemacs//helm-do-grep-region-or-symbol (list default-directory) nil))
+
 (defun spacemacs/helm-dir-do-ack-region-or-symbol ()
   "Search in current directory with `ack' with a default input."
   (interactive)