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git/Documentation/git-am.txt
Bradley M. Kuhn 3abd4a67d9 Documentation: stylistically normalize references to Signed-off-by:
Ted reported an old typo in the git-commit.txt and merge-options.txt.
Namely, the phrase "Signed-off-by line" was used without either a
definite nor indefinite article.

Upon examination, it seems that the documentation (including items in
Documentation/, but also option help strings) have been quite
inconsistent on usage when referring to `Signed-off-by`.

First, very few places used a definite or indefinite article with the
phrase "Signed-off-by line", but that was the initial typo that led
to this investigation.  So, normalize using either an indefinite or
definite article consistently.

The original phrasing, in Commit 3f971fc425 (Documentation updates,
2005-08-14), is "Add Signed-off-by line".  Commit 6f855371a5 (Add
--signoff, --check, and long option-names. 2005-12-09) switched to
using "Add `Signed-off-by:` line", but didn't normalize the former
commit to match.  Later commits seem to have cut and pasted from one
or the other, which is likely how the usage became so inconsistent.

Junio stated on the git mailing list in
<xmqqy2k1dfoh.fsf@gitster.c.googlers.com> a preference to leave off
the colon.  Thus, prefer `Signed-off-by` (with backticks) for the
documentation files and Signed-off-by (without backticks) for option
help strings.

Additionally, Junio argued that "trailer" is now the standard term to
refer to `Signed-off-by`, saying that "becomes plenty clear that we
are not talking about any random line in the log message".  As such,
prefer "trailer" over "line" anywhere the former word fits.

However, leave alone those few places in documentation that use
Signed-off-by to refer to the process (rather than the specific
trailer), or in places where mail headers are generally discussed in
comparison with Signed-off-by.

Reported-by: "Theodore Y. Ts'o" <tytso@mit.edu>
Signed-off-by: Bradley M. Kuhn <bkuhn@sfconservancy.org>
Acked-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-20 11:57:40 -07:00

251 lines
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git-am(1)
=========
NAME
----
git-am - Apply a series of patches from a mailbox
SYNOPSIS
--------
[verse]
'git am' [--signoff] [--keep] [--[no-]keep-cr] [--[no-]utf8]
[--[no-]3way] [--interactive] [--committer-date-is-author-date]
[--ignore-date] [--ignore-space-change | --ignore-whitespace]
[--whitespace=<option>] [-C<n>] [-p<n>] [--directory=<dir>]
[--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[=(diff|raw)])
DESCRIPTION
-----------
Splits mail messages in a mailbox into commit log message,
authorship information and patches, and applies them to the
current branch.
OPTIONS
-------
(<mbox>|<Maildir>)...::
The list of mailbox files to read patches from. If you do not
supply this argument, the command reads from the standard input.
If you supply directories, they will be treated as Maildirs.
-s::
--signoff::
Add a `Signed-off-by` trailer to the commit message, using
the committer identity of yourself.
See the signoff option in linkgit:git-commit[1] for more information.
-k::
--keep::
Pass `-k` flag to 'git mailinfo' (see linkgit:git-mailinfo[1]).
--keep-non-patch::
Pass `-b` flag to 'git mailinfo' (see linkgit:git-mailinfo[1]).
--[no-]keep-cr::
With `--keep-cr`, call 'git mailsplit' (see linkgit:git-mailsplit[1])
with the same option, to prevent it from stripping CR at the end of
lines. `am.keepcr` configuration variable can be used to specify the
default behaviour. `--no-keep-cr` is useful to override `am.keepcr`.
-c::
--scissors::
Remove everything in body before a scissors line (see
linkgit:git-mailinfo[1]). Can be activated by default using
the `mailinfo.scissors` configuration variable.
--no-scissors::
Ignore scissors lines (see linkgit:git-mailinfo[1]).
-m::
--message-id::
Pass the `-m` flag to 'git mailinfo' (see linkgit:git-mailinfo[1]),
so that the Message-ID header is added to the commit message.
The `am.messageid` configuration variable can be used to specify
the default behaviour.
--no-message-id::
Do not add the Message-ID header to the commit message.
`no-message-id` is useful to override `am.messageid`.
-q::
--quiet::
Be quiet. Only print error messages.
-u::
--utf8::
Pass `-u` flag to 'git mailinfo' (see linkgit:git-mailinfo[1]).
The proposed commit log message taken from the e-mail
is re-coded into UTF-8 encoding (configuration variable
`i18n.commitencoding` can be used to specify project's
preferred encoding if it is not UTF-8).
+
This was optional in prior versions of git, but now it is the
default. You can use `--no-utf8` to override this.
--no-utf8::
Pass `-n` flag to 'git mailinfo' (see
linkgit:git-mailinfo[1]).
-3::
--3way::
--no-3way::
When the patch does not apply cleanly, fall back on
3-way merge if the patch records the identity of blobs
it is supposed to apply to and we have those blobs
available locally. `--no-3way` can be used to override
am.threeWay configuration variable. For more information,
see am.threeWay in linkgit:git-config[1].
--rerere-autoupdate::
--no-rerere-autoupdate::
Allow the rerere mechanism to update the index with the
result of auto-conflict resolution if possible.
--ignore-space-change::
--ignore-whitespace::
--whitespace=<option>::
-C<n>::
-p<n>::
--directory=<dir>::
--exclude=<path>::
--include=<path>::
--reject::
These flags are passed to the 'git apply' (see linkgit:git-apply[1])
program that applies
the patch.
--patch-format::
By default the command will try to detect the patch format
automatically. This option allows the user to bypass the automatic
detection and specify the patch format that the patch(es) should be
interpreted as. Valid formats are mbox, mboxrd,
stgit, stgit-series and hg.
-i::
--interactive::
Run interactively.
--committer-date-is-author-date::
By default the command records the date from the e-mail
message as the commit author date, and uses the time of
commit creation as the committer date. This allows the
user to lie about the committer date by using the same
value as the author date.
--ignore-date::
By default the command records the date from the e-mail
message as the commit author date, and uses the time of
commit creation as the committer date. This allows the
user to lie about the author date by using the same
value as the committer date.
--skip::
Skip the current patch. This is only meaningful when
restarting an aborted patch.
-S[<keyid>]::
--gpg-sign[=<keyid>]::
--no-gpg-sign::
GPG-sign commits. The `keyid` argument is optional and
defaults to the committer identity; if specified, it must be
stuck to the option without a space. `--no-gpg-sign` is useful to
countermand both `commit.gpgSign` configuration variable, and
earlier `--gpg-sign`.
--continue::
-r::
--resolved::
After a patch failure (e.g. attempting to apply
conflicting patch), the user has applied it by hand and
the index file stores the result of the application.
Make a commit using the authorship and commit log
extracted from the e-mail message and the current index
file, and continue.
--resolvemsg=<msg>::
When a patch failure occurs, <msg> will be printed
to the screen before exiting. This overrides the
standard message informing you to use `--continue`
or `--skip` to handle the failure. This is solely
for internal use between 'git rebase' and 'git am'.
--abort::
Restore the original branch and abort the patching operation.
--quit::
Abort the patching operation but keep HEAD and the index
untouched.
--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
----------
The commit author name is taken from the "From: " line of the
message, and commit author date is taken from the "Date: " line
of the message. The "Subject: " line is used as the title of
the commit, after stripping common prefix "[PATCH <anything>]".
The "Subject: " line is supposed to concisely describe what the
commit is about in one line of text.
"From: ", "Date: ", and "Subject: " lines starting the body override the
respective commit author name and title values taken from the headers.
The commit message is formed by the title taken from the
"Subject: ", a blank line and the body of the message up to
where the patch begins. Excess whitespace at the end of each
line is automatically stripped.
The patch is expected to be inline, directly following the
message. Any line that is of the form:
* three-dashes and end-of-line, or
* a line that begins with "diff -", or
* a line that begins with "Index: "
is taken as the beginning of a patch, and the commit log message
is terminated before the first occurrence of such a line.
When initially invoking `git am`, you give it the names of the mailboxes
to process. Upon seeing the first patch that does not apply, it
aborts in the middle. You can recover from this in one of two ways:
. skip the current patch by re-running the command with the `--skip`
option.
. hand resolve the conflict in the working directory, and update
the index file to bring it into a state that the patch should
have produced. Then run the command with the `--continue` option.
The command refuses to process new mailboxes until the current
operation is finished, so if you decide to start over from scratch,
run `git am --abort` before running the command with mailbox
names.
Before any patches are applied, ORIG_HEAD is set to the tip of the
current branch. This is useful if you have problems with multiple
commits, like running 'git am' on the wrong branch or an error in the
commits that is more easily fixed by changing the mailbox (e.g.
errors in the "From:" lines).
HOOKS
-----
This command can run `applypatch-msg`, `pre-applypatch`,
and `post-applypatch` hooks. See linkgit:githooks[5] for more
information.
SEE ALSO
--------
linkgit:git-apply[1].
GIT
---
Part of the linkgit:git[1] suite