The current logic makes it hard to see what gets put onto
the command line in which cases. Pulling out a helper
function lets us see that we have two sets of file data, and
the second set either uses the original name, or the "other"
renamed/copy name.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
The last patch and this one are getting a little bit into code churn,
perhaps. I think the prior one is hands-down more readable. This one, I
am on the fence on whether it is a true improvement or simply "this is
how _I_ would have written it". I won't be offended if we drop it.
diff.c | 26 +++++++++++++++-----------
1 file changed, 15 insertions(+), 11 deletions(-)
diff --git a/diff.c b/diff.c
index 173b657..4b8bfc6 100644
--- a/diff.c
+++ b/diff.c
@@ -2888,6 +2888,16 @@ static struct diff_tempfile *prepare_temp_file(const char *name,
return temp;
}
+static void add_external_diff_name(struct argv_array *argv,
+ const char *name,
+ struct diff_filespec *df)
+{
+ struct diff_tempfile *temp = prepare_temp_file(name, df);
+ argv_array_push(argv, temp->name);
+ argv_array_push(argv, temp->hex);
+ argv_array_push(argv, temp->mode);
+}
+
/* An external diff command takes:
*
* diff-cmd name infile1 infile1-sha1 infile1-mode \
@@ -2911,17 +2921,11 @@ static void run_external_diff(const char *pgm,
argv_array_push(&argv, name);
if (one && two) {
- struct diff_tempfile *temp_one, *temp_two;
- const char *othername = (other ? other : name);
- temp_one = prepare_temp_file(name, one);
- temp_two = prepare_temp_file(othername, two);
- argv_array_push(&argv, temp_one->name);
- argv_array_push(&argv, temp_one->hex);
- argv_array_push(&argv, temp_one->mode);
- argv_array_push(&argv, temp_two->name);
- argv_array_push(&argv, temp_two->hex);
- argv_array_push(&argv, temp_two->mode);
- if (other) {
+ add_external_diff_name(&argv, name, one);
+ if (!other)
+ add_external_diff_name(&argv, name, two);
+ else {
+ add_external_diff_name(&argv, other, two);
argv_array_push(&argv, other);
argv_array_push(&argv, xfrm_msg);
}
--
1.9.1.656.ge8a0637
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