Sync with maint

diff --git a/grep.c b/grep.c
index 2c55d10c5534a7cd1e554c4c7e5a2da834ff5512..a69c05edc2e4fc6787076531b43a49c7ccdc1113 100644 (file)
--- a/grep.c
+++ b/grep.c
@@ -1476,33 +1476,52 @@ static void show_funcname_line(struct grep_opt *opt, struct grep_source *gs,
        }
 }
 
+static int is_empty_line(const char *bol, const char *eol);
+
 static void show_pre_context(struct grep_opt *opt, struct grep_source *gs,
                             char *bol, char *end, unsigned lno)
 {
        unsigned cur = lno, from = 1, funcname_lno = 0, orig_from;
-       int funcname_needed = !!opt->funcname;
+       int funcname_needed = !!opt->funcname, comment_needed = 0;
 
        if (opt->pre_context < lno)
                from = lno - opt->pre_context;
        if (from <= opt->last_shown)
                from = opt->last_shown + 1;
        orig_from = from;
-       if (opt->funcbody && !match_funcname(opt, gs, bol, end)) {
-               funcname_needed = 1;
+       if (opt->funcbody) {
+               if (match_funcname(opt, gs, bol, end))
+                       comment_needed = 1;
+               else
+                       funcname_needed = 1;
                from = opt->last_shown + 1;
        }
 
        /* Rewind. */
        while (bol > gs->buf && cur > from) {
+               char *next_bol = bol;
                char *eol = --bol;
 
                while (bol > gs->buf && bol[-1] != '\n')
                        bol--;
                cur--;
+               if (comment_needed && (is_empty_line(bol, eol) ||
+                                      match_funcname(opt, gs, bol, eol))) {
+                       comment_needed = 0;
+                       from = orig_from;
+                       if (cur < from) {
+                               cur++;
+                               bol = next_bol;
+                               break;
+                       }
+               }
                if (funcname_needed && match_funcname(opt, gs, bol, eol)) {
                        funcname_lno = cur;
                        funcname_needed = 0;
-                       from = orig_from;
+                       if (opt->funcbody)
+                               comment_needed = 1;
+                       else
+                               from = orig_from;
                }
        }