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git-diff/git-apply: make diff output a bit friendlier to GNU patch (part 2)

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Somebody was wondering on #git channel why a git generated diff
does not apply with GNU patch when the filename contains a SP.
It is because GNU patch expects to find TAB (and trailing timestamp)
on ---/+++ (old_name and new_name) lines after the filenames.

The "diff --git" output format was carefully designed to be
compatible with GNU patch where it can, but whitespace
characters were always a pain.

This adds an extra TAB (but not trailing timestamp) to old_name
and new_name lines of git-diff output when the filename has a SP
in it.  An earlier patch updated git-apply to prepare for this.

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano 2006-09-22 16:17:58 -07:00
parent 5942706357
commit 1a9eb3b9d5
1 changed files with 17 additions and 3 deletions
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20
diff.c
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@ -204,11 +204,18 @@ static void emit_rewrite_diff(const char *name_a,
struct diff_filespec *two)
{
int lc_a, lc_b;
const char *name_a_tab, *name_b_tab;
name_a_tab = strchr(name_a, ' ') ? "\t" : "";
name_b_tab = strchr(name_b, ' ') ? "\t" : "";
diff_populate_filespec(one, 0);
diff_populate_filespec(two, 0);
lc_a = count_lines(one->data, one->size);
lc_b = count_lines(two->data, two->size);
printf("--- a/%s\n+++ b/%s\n@@ -", name_a, name_b);
printf("--- a/%s%s\n+++ b/%s%s\n@@ -",
name_a, name_a_tab,
name_b, name_b_tab);
print_line_count(lc_a);
printf(" +");
print_line_count(lc_b);
@ -474,8 +481,15 @@ static void fn_out_consume(void *priv, char *line, unsigned long len)
const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET);
if (ecbdata->label_path[0]) {
printf("%s--- %s%s\n", set, ecbdata->label_path[0], reset);
printf("%s+++ %s%s\n", set, ecbdata->label_path[1], reset);
const char *name_a_tab, *name_b_tab;
name_a_tab = strchr(ecbdata->label_path[0], ' ') ? "\t" : "";
name_b_tab = strchr(ecbdata->label_path[1], ' ') ? "\t" : "";
printf("%s--- %s%s%s\n",
set, ecbdata->label_path[0], reset, name_a_tab);
printf("%s+++ %s%s%s\n",
set, ecbdata->label_path[1], reset, name_b_tab);
ecbdata->label_path[0] = ecbdata->label_path[1] = NULL;
}