Re: [PATCH 6/6] doc/git-commit: add documentation for fixup[amend|reword] options

> Mentored-by: Christian Couder <chriscool@tuxfamily.org>
> Mentored-by: Phillip Wood <phillip.wood@dunelm.org.uk>
> Signed-off-by: Charvi Mendiratta <charvi077@gmail.com>
> ---
>  Documentation/git-commit.txt | 39 ++++++++++++++++++++++++++++++------
>  Documentation/git-rebase.txt | 21 ++++++++++---------
>  2 files changed, 44 insertions(+), 16 deletions(-)
>
> diff --git a/Documentation/git-commit.txt b/Documentation/git-commit.txt
> index 17150fa7ea..9a60876845 100644
> --- a/Documentation/git-commit.txt
> +++ b/Documentation/git-commit.txt
> @@ -9,7 +9,7 @@ SYNOPSIS
>  --------
>  [verse]
>  'git commit' [-a | --interactive | --patch] [-s] [-v] [-u<mode>] [--amend]
> -	   [--dry-run] [(-c | -C | --fixup | --squash) <commit>]
> +	   [--dry-run] [(-c | -C | --squash) <commit> | --fixup [(amend|reword):]<commit>)]
>  	   [-F <file> | -m <msg>] [--reset-author] [--allow-empty]
>  	   [--allow-empty-message] [--no-verify] [-e] [--author=<author>]
>  	   [--date=<date>] [--cleanup=<mode>] [--[no-]status]
> @@ -86,11 +86,38 @@ OPTIONS
>  	Like '-C', but with `-c` the editor is invoked, so that
>  	the user can further edit the commit message.
>  
> ---fixup=<commit>::
> -	Construct a commit message for use with `rebase --autosquash`.
> -	The commit message will be the subject line from the specified
> -	commit with a prefix of "fixup! ".  See linkgit:git-rebase[1]
> -	for details.
> +--fixup=[(amend|reword):]<commit>::
> +	When used without options, lets's say `git commit --fixup=<commit>`,
> +	it creates a "fixup!" commit where the commit message will be
> +	the subject line from the specified commit with a prefix of
> +	"fixup! ". The resulting "fixup!" commit is further used with
> +	`git rebase --autosquash` to fixup the content of the specified
> +	commit.
> +
> +	When used with option `amend`, let's say
> +	`git commit --fixup=amend:<commit>`, it creates a "amend!" commit
> +	to fixup both the content and the commit log message of the
> +	specified commit. The resulting "amend!" commit's commit message
> +	subject will be the subject line from the specified commit with a
> +	prefix of "amend! " and the message body will be commit log message
> +	of the specified commit. It also invokes an editor seeded with the
> +	"amend!" commit log message to allow to edit further. And it denies
> +	to create "amend!" commit if it's commit message body is empty unless
> +	used with `allow-empty-message` option. "amend!" commit when rebased
> +	with `--autosquash` will fixup the contents and replace the commit
> +	message of the specified commit with the "amend!" commit's message
> +	body.
> +
> +	When used with alternative option `reword`, let's say
> +	`git commit --fixup=reword:<commit>`, it works similar to `amend`
> +	option, but here it creates an empty "amend!" commit, i.e it does
> +	not take any staged changes and only allows to fixup the commit
> +	message of the specified commit. It will reword the specified
> +	commit when it is rebased with `--autosquash`.
> +
> +	`--fixup`, with or without option, can be used with additional
> +	commit message option `-m` but not with `-F`/`-c`/`-C`. See
> +	linkgit:git-rebase[1] for details.

>  --squash=<commit>::
>  	Construct a commit message for use with `rebase --autosquash`.
> diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
> index 8bfa5a9272..ffea76e53b 100644
> --- a/Documentation/git-rebase.txt
> +++ b/Documentation/git-rebase.txt
> @@ -593,16 +593,17 @@ See also INCOMPATIBLE OPTIONS below.
>  
>  --autosquash::
>  --no-autosquash::
> -	When the commit log message begins with "squash! ..." (or
> -	"fixup! ..."), and there is already a commit in the todo list that
> -	matches the same `...`, automatically modify the todo list of rebase
> -	-i so that the commit marked for squashing comes right after the
> -	commit to be modified, and change the action of the moved commit
> -	from `pick` to `squash` (or `fixup`).  A commit matches the `...` if
> -	the commit subject matches, or if the `...` refers to the commit's
> -	hash. As a fall-back, partial matches of the commit subject work,
> -	too.  The recommended way to create fixup/squash commits is by using
> -	the `--fixup`/`--squash` options of linkgit:git-commit[1].
> +	When the commit log message begins with "squash! ..." (or "fixup! ..."
> +	or "amend! ..."), and there is already a commit in the todo list that
> +	matches the same `...`, automatically modify the todo list of
> +	`rebase -i`, so that the commit marked for squashing comes right after
> +	the commit to be modified, and change the action of the moved commit
> +	from `pick` to `squash` (or `fixup` or `fixup -C`) respectively. A commit
> +	matches the `...` if the commit subject matches, or if the `...` refers
> +	to the commit's hash. As a fall-back, partial matches of the commit
> +	subject work, too. The recommended way to create fixup/squash/amend
> +	commits is by using the `--fixup=[amend|reword]`/`--squash` options of
> +	linkgit:git-commit[1].
>  +
>  If the `--autosquash` option is enabled by default using the
>  configuration variable `rebase.autoSquash`, this option can be