combine-diff: a few more finishing touches.
"new file" and "deleted file" were already reported in the
original code, but the logic was not as transparent as it could
have. This uses a few variables and more comments to clarify
the flow. The rule is: (1) if a path exists in the merge result
when no parent had it, we report "new" (otherwise it came from
the parents, as opposed to have added by the evil merge). (2) if
the path does not exist in the merge result, it is "deleted".
Since we can say "new" and "deleted", there is no reason not to
follow the /dev/null convention. This fixes it.
Appending function name after @@@ ... @@@ is trivial, so
implement it.
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/combine-diff.c b/combine-diff.c
index 46d9121..01a8437 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -489,6 +489,12 @@
printf(" -%lu,%lu", l0, l1-l0);
}
+static int hunk_comment_line(const char *bol)
+{
+ int ch = *bol & 0xff;
+ return (isalpha(ch) || ch == '_' || ch == '$');
+}
+
static void dump_sline(struct sline *sline, unsigned long cnt, int num_parent,
int use_color)
{
@@ -508,8 +514,13 @@
struct sline *sl = &sline[lno];
unsigned long hunk_end;
unsigned long rlines;
- while (lno <= cnt && !(sline[lno].flag & mark))
+ const char *hunk_comment = NULL;
+
+ while (lno <= cnt && !(sline[lno].flag & mark)) {
+ if (hunk_comment_line(sline[lno].bol))
+ hunk_comment = sline[lno].bol;
lno++;
+ }
if (cnt < lno)
break;
else {
@@ -526,6 +537,22 @@
show_parent_lno(sline, lno, hunk_end, i);
printf(" +%lu,%lu ", lno+1, rlines);
for (i = 0; i <= num_parent; i++) putchar(combine_marker);
+
+ if (hunk_comment) {
+ int comment_end = 0;
+ for (i = 0; i < 40; i++) {
+ int ch = hunk_comment[i] & 0xff;
+ if (!ch || ch == '\n')
+ break;
+ if (!isspace(ch))
+ comment_end = i;
+ }
+ if (comment_end)
+ putchar(' ');
+ for (i = 0; i < comment_end; i++)
+ putchar(hunk_comment[i]);
+ }
+
printf("%s\n", c_reset);
while (lno < hunk_end) {
struct lline *ll;
@@ -707,6 +734,8 @@
int use_color = opt->color_diff;
const char *c_meta = diff_get_color(use_color, DIFF_METAINFO);
const char *c_reset = diff_get_color(use_color, DIFF_RESET);
+ int added = 0;
+ int deleted = 0;
if (rev->loginfo)
show_log(rev, opt->msg_sep);
@@ -722,7 +751,10 @@
printf("..%s%s\n", abb, c_reset);
if (mode_differs) {
- int added = !!elem->mode;
+ deleted = !elem->mode;
+
+ /* We say it was added if nobody had it */
+ added = !deleted;
for (i = 0; added && i < num_parent; i++)
if (elem->parent[i].status !=
DIFF_STATUS_ADDED)
@@ -731,7 +763,7 @@
printf("%snew file mode %06o",
c_meta, elem->mode);
else {
- if (!elem->mode)
+ if (deleted)
printf("%sdeleted file ", c_meta);
printf("mode ");
for (i = 0; i < num_parent; i++) {
@@ -743,8 +775,14 @@
}
printf("%s\n", c_reset);
}
- dump_quoted_path("--- a/", elem->path, c_meta, c_reset);
- dump_quoted_path("+++ b/", elem->path, c_meta, c_reset);
+ if (added)
+ dump_quoted_path("--- /dev/", "null", c_meta, c_reset);
+ else
+ dump_quoted_path("--- a/", elem->path, c_meta, c_reset);
+ if (deleted)
+ dump_quoted_path("+++ /dev/", "null", c_meta, c_reset);
+ else
+ dump_quoted_path("+++ b/", elem->path, c_meta, c_reset);
dump_sline(sline, cnt, num_parent, opt->color_diff);
}
free(result);
