There are two backends available for rebasing, viz, the am and the
interactive. Naturally, there shall be some features that are
implemented in one but not in the other. One such flag is
--ignore-whitespace which indicates merge mechanism to treat lines
with only whitespace changes as unchanged. Wire the interactive
rebase to also understand the --ignore-whitespace flag by
translating it to -Xignore-space-change.
Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@xxxxxxxxx>
---
Documentation/git-rebase.txt | 13 ++++-
builtin/rebase.c | 22 +++++++--
t/t3422-rebase-incompatible-options.sh | 1 -
t/t3433-rebase-options-compatibility.sh | 65 +++++++++++++++++++++++++
4 files changed, 94 insertions(+), 7 deletions(-)
create mode 100755 t/t3433-rebase-options-compatibility.sh
diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index 6156609cf7..873eb5768c 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -371,8 +371,16 @@ If either <upstream> or --root is given on the command line, then the
default is `--no-fork-point`, otherwise the default is `--fork-point`.
--ignore-whitespace::
+ Behaves differently depending on which backend is selected.
++
+'am' backend: When applying a patch, ignore changes in whitespace in
+context lines if necessary.
++
+'interactive' backend: Treat lines with only whitespace changes as
+unchanged for the sake of a three-way merge.
+
--whitespace=<option>::
- These flag are passed to the 'git apply' program
+ This flag is passed to the 'git apply' program
(see linkgit:git-apply[1]) that applies the patch.
+
See also INCOMPATIBLE OPTIONS below.
@@ -520,7 +528,6 @@ The following options:
* --committer-date-is-author-date
* --ignore-date
* --whitespace
- * --ignore-whitespace
* -C
are incompatible with the following options:
@@ -543,6 +550,8 @@ In addition, the following pairs of options are incompatible:
* --preserve-merges and --interactive
* --preserve-merges and --signoff
* --preserve-merges and --rebase-merges
+ * --preserve-merges and --ignore-whitespace
+ * --rebase-merges and --ignore-whitespace
* --rebase-merges and --strategy
* --rebase-merges and --strategy-option
diff --git a/builtin/rebase.c b/builtin/rebase.c
index 670096c065..f8a618d54c 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -79,6 +79,7 @@ struct rebase_options {
int allow_rerere_autoupdate;
int keep_empty;
int autosquash;
+ int ignore_whitespace;
char *gpg_sign_opt;
int autostash;
char *cmd;
@@ -99,6 +100,7 @@ struct rebase_options {
static struct replay_opts get_replay_opts(const struct rebase_options *opts)
{
+ struct strbuf strategy_buf = STRBUF_INIT;
struct replay_opts replay = REPLAY_OPTS_INIT;
replay.action = REPLAY_INTERACTIVE_REBASE;
@@ -114,9 +116,15 @@ static struct replay_opts get_replay_opts(const struct rebase_options *opts)
replay.reschedule_failed_exec = opts->reschedule_failed_exec;
replay.gpg_sign = xstrdup_or_null(opts->gpg_sign_opt);
replay.strategy = opts->strategy;
+
if (opts->strategy_opts)
- parse_strategy_opts(&replay, opts->strategy_opts);
+ strbuf_addstr(&strategy_buf, opts->strategy_opts);
+ if (opts->ignore_whitespace)
+ strbuf_addstr(&strategy_buf, " --ignore-space-change");
+ if (strategy_buf.len)
+ parse_strategy_opts(&replay, strategy_buf.buf);
+ strbuf_release(&strategy_buf);
return replay;
}
@@ -511,6 +519,8 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix)
argc = parse_options(argc, argv, prefix, options,
builtin_rebase_interactive_usage, PARSE_OPT_KEEP_ARGV0);
+ opts.strategy_opts = xstrdup_or_null(opts.strategy_opts);
+
if (!is_null_oid(&squash_onto))
opts.squash_onto = &squash_onto;
@@ -964,6 +974,8 @@ static int run_am(struct rebase_options *opts)
am.git_cmd = 1;
argv_array_push(&am.args, "am");
+ if (opts->ignore_whitespace)
+ argv_array_push(&am.args, "--ignore-whitespace");
if (opts->action && !strcmp("continue", opts->action)) {
argv_array_push(&am.args, "--resolved");
argv_array_pushf(&am.args, "--resolvemsg=%s", resolvemsg);
@@ -1407,9 +1419,6 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
PARSE_OPT_NOARG, NULL, REBASE_DIFFSTAT },
OPT_BOOL(0, "signoff", &options.signoff,
N_("add a Signed-off-by: line to each commit")),
- OPT_PASSTHRU_ARGV(0, "ignore-whitespace", &options.git_am_opts,
- NULL, N_("passed to 'git am'"),
- PARSE_OPT_NOARG),
OPT_PASSTHRU_ARGV(0, "committer-date-is-author-date",
&options.git_am_opts, NULL,
N_("passed to 'git am'"), PARSE_OPT_NOARG),
@@ -1417,6 +1426,8 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
N_("passed to 'git am'"), PARSE_OPT_NOARG),
OPT_PASSTHRU_ARGV('C', NULL, &options.git_am_opts, N_("n"),
N_("passed to 'git apply'"), 0),
+ OPT_BOOL(0, "ignore-whitespace", &options.ignore_whitespace,
+ N_("ignore changes in whitespace")),
OPT_PASSTHRU_ARGV(0, "whitespace", &options.git_am_opts,
N_("action"), N_("passed to 'git apply'"), 0),
OPT_BIT('f', "force-rebase", &options.flags,
@@ -1834,6 +1845,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
}
if (options.rebase_merges) {
+ if (options.ignore_whitespace)
+ die(_("cannot combine '--rebase-merges' with "
+ "'--ignore-whitespace'"));
