Make `M-x grep' work better with "git grep"

* lisp/progmodes/compile.el (compilation-start): Bind PAGER to ""
to avoid errors in output from "git grep" and similar commands
(bug#4359).

diff --git a/lisp/progmodes/compile.el b/lisp/progmodes/compile.el
index 8b70e8400b2037b9f98e6e9c4eb4da918c883801..d28fce9dbd7c21af9dcd1b1e14997a53220bcb59 100644 (file)
--- a/lisp/progmodes/compile.el
+++ b/lisp/progmodes/compile.el
@@ -1956,6 +1956,9 @@ Returns the compilation buffer created."
               (and (derived-mode-p 'comint-mode)
                    (comint-term-environment))
              (list (format "INSIDE_EMACS=%s,compile" emacs-version))
+              ;; Some external programs (like "git grep") use a pager;
+              ;; defeat that.
+              (list "PAGER=")
              (copy-sequence process-environment))))
         (setq-local compilation-arguments
                     (list command mode name-function highlight-regexp))