difftool --no-index: error out on --dir-diff (and don't crash)

diff --git a/ref-filter.c b/ref-filter.c
index 09b5fb439f472f3ba541b63dd01c192f689c6735..3aca105307863f5342699babfbea2ac3035fdacb 100644 (file)
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -485,6 +485,10 @@ static struct {
        { "if", SOURCE_NONE, FIELD_STR, if_atom_parser },
        { "then", SOURCE_NONE },
        { "else", SOURCE_NONE },
+       /*
+        * Please update $__git_ref_fieldlist in git-completion.bash
+        * when you add new atoms
+        */
 };
 
 #define REF_FORMATTING_STATE_INIT  { 0, NULL }