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am: support --show-current-patch=diff to retrieve .git/rebase-apply/patch 

When "git am --show-current-patch" was added in commit 984913a210 ("am:
add --show-current-patch", 2018-02-12), "git am" started recommending it
as a replacement for .git/rebase-merge/patch.  Unfortunately the suggestion
is somewhat misguided; for example, the output of "git am --show-current-patch"
cannot be passed to "git apply" if it is encoded as quoted-printable
or base64.  Add a new mode to "git am --show-current-patch" in order to
straighten the suggestion.

Reported-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Paolo Bonzini 2020-02-20 15:15:19 +01:00 committed by Junio C Hamano
parent f3b4822899
commit aa416b22ea
4 changed files with 24 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
Documentation/git-am.txt
View File

@ -16,7 +16,7 @@ SYNOPSIS
[--exclude=<path>] [--include=<path>] [--reject] [-q | --quiet]
[--[no-]scissors] [-S[<keyid>]] [--patch-format=<format>]
[(<mbox> | <Maildir>)...]
'git am' (--continue | --skip | --abort | --quit | --show-current-patch[=raw])
'git am' (--continue | --skip | --abort | --quit | --show-current-patch[=(diff|raw)])
DESCRIPTION
-----------
@ -176,10 +176,11 @@ default. You can use `--no-utf8` to override this.
Abort the patching operation but keep HEAD and the index
untouched.
--show-current-patch[=raw]::
Show the raw contents of the e-mail message at which `git am`
has stopped due to conflicts. The argument must be omitted or
`raw`.
--show-current-patch[=(diff|raw)]::
Show the message at which `git am` has stopped due to
conflicts. If `raw` is specified, show the raw contents of
the e-mail message; if `diff`, show the diff portion only.
Defaults to `raw`.
DISCUSSION
----------

9
builtin/am.c
View File

@ -83,6 +83,7 @@ enum signoff_type {
enum show_patch_type {
SHOW_PATCH_RAW = 0,
SHOW_PATCH_DIFF = 1,
};
struct am_state {
@ -1767,7 +1768,7 @@ static void am_run(struct am_state *state, int resume)
linelen(state->msg), state->msg);
if (advice_amworkdir)
advise(_("Use 'git am --show-current-patch' to see the failed patch"));
advise(_("Use 'git am --show-current-patch=diff' to see the failed patch"));
die_user_resolve(state);
}
@ -2086,6 +2087,9 @@ static int show_patch(struct am_state *state, enum show_patch_type sub_mode)
case SHOW_PATCH_RAW:
patch_path = am_path(state, msgnum(state));
break;
case SHOW_PATCH_DIFF:
patch_path = am_path(state, "patch");
break;
default:
BUG("invalid mode for --show-current-patch");
}
@ -2154,6 +2158,7 @@ static int parse_opt_show_current_patch(const struct option *opt, const char *ar
* when you add new options
*/
const char *valid_modes[] = {
[SHOW_PATCH_DIFF] = "diff",
[SHOW_PATCH_RAW] = "raw"
};
int new_value = SHOW_PATCH_RAW;
@ -2279,7 +2284,7 @@ int cmd_am(int argc, const char **argv, const char *prefix)
N_("abort the patching operation but keep HEAD where it is."),
RESUME_QUIT),
{ OPTION_CALLBACK, 0, "show-current-patch", &resume.mode,
"raw",
"(diff|raw)",
N_("show the patch being applied"),
PARSE_OPT_CMDMODE | PARSE_OPT_OPTARG | PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP,
parse_opt_show_current_patch, RESUME_SHOW_PATCH },

2
contrib/completion/git-completion.bash
View File

@ -1180,7 +1180,7 @@ __git_count_arguments ()
__git_whitespacelist="nowarn warn error error-all fix"
__git_patchformat="mbox stgit stgit-series hg mboxrd"
__git_showcurrentpatch="raw"
__git_showcurrentpatch="diff raw"
__git_am_inprogress_options="--skip --continue --resolved --abort --quit --show-current-patch"
_git_am ()

10
t/t4150-am.sh
View File

@ -671,11 +671,21 @@ test_expect_success 'am --show-current-patch=raw' '
test_cmp .git/rebase-apply/0001 actual.patch
'
test_expect_success 'am --show-current-patch=diff' '
git am --show-current-patch=diff >actual.patch &&
test_cmp .git/rebase-apply/patch actual.patch
'
test_expect_success 'am accepts repeated --show-current-patch' '
git am --show-current-patch --show-current-patch=raw >actual.patch &&
test_cmp .git/rebase-apply/0001 actual.patch
'
test_expect_success 'am detects incompatible --show-current-patch' '
test_must_fail git am --show-current-patch=raw --show-current-patch=diff &&
test_must_fail git am --show-current-patch --show-current-patch=diff
'
test_expect_success 'am --skip works' '
echo goodbye >expected &&
git am --skip &&