Fix project-find-regexp search for '--'

* lisp/progmodes/project.el (project--find-regexp-in-files):
Add an explicit '-e' before the pattern.  Fixing the ability to
search for '--'.  Reported by Juri Linkov <juri@linkov.net>.

diff --git a/lisp/progmodes/project.el b/lisp/progmodes/project.el
index b8a58ed317b22e173c58eb4ec374a06e841520e0..11a2ef40094cc081dd69841a9b6c36ca5b3d90f2 100644 (file)
--- a/lisp/progmodes/project.el
+++ b/lisp/progmodes/project.el
@@ -391,7 +391,7 @@ pattern to search for."
        (status nil)
        (hits nil)
        (xrefs nil)
-       (command (format "xargs -0 grep %s -nHE %s"
+       (command (format "xargs -0 grep %s -nHE -e %s"
                         (if (and case-fold-search
                                  (isearch-no-upper-case-p regexp t))
                             "-i"