Provide a build time default-editor setting

Provide a DEFAULT_EDITOR knob to allow setting the fallback
editor to use instead of vi (when VISUAL, EDITOR, and GIT_EDITOR
are unset).  The value can be set at build time according to a
system’s policy.  For example, on Debian systems, the default
editor should be the 'editor' command.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Ben Walton <bwalton@artsci.utoronto.ca>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/editor.c b/editor.c
index 70618f1066..615f5754d6 100644
--- a/editor.c
+++ b/editor.c
@@ -2,6 +2,10 @@
 #include "strbuf.h"
 #include "run-command.h"
 
+#ifndef DEFAULT_EDITOR
+#define DEFAULT_EDITOR "vi"
+#endif
+
 const char *git_editor(void)
 {
 	const char *editor = getenv("GIT_EDITOR");
@@ -19,7 +23,7 @@ const char *git_editor(void)
 		return NULL;
 
 	if (!editor)
-		editor = "vi";
+		editor = DEFAULT_EDITOR;
 
 	return editor;
 }