[PATCH v3 0/8] teach branch-specific options for format-patch

Hi Junio,

I've gotten rid of all the `format.*.coverSubject` stuff and replaced it with a generic `format.inferCoverSubject` that will read the subject from the branch description. I've also made `git branch -d` stop deleting the `format.<branch>.*` variables.

A new addition in this patchset is that format-patch is now taught to understand the `format.<branch-name>.outputDirectory` configuration.

Changes since v2:

* Replaced `format.<branch-name>.coverSubject` and `--cover-subject`
  with `format.inferCoverSubject` and `--infer-cover-subject` which
  reads the subject from the branch description
* Do not let `git branch -d` delete `format.<branch-name>.*` configs
* More documentation cleanup
* Taught format-patch to read `format.<branch-name>.outputDirectory` as
  well

Changes since v1:

* Used format.<branch-name>.* variables instead of branch.<branch-name>.*

Denton Liu (8):
  t4014: clean up style
  Doc: add more detail for git-format-patch
  format-patch: infer cover letter from branch description
  format-patch: move extra_headers logic later
  string-list: create string_list_append_all
  format-patch: read branch-specific To: and Cc: headers
  format-patch: move output_directory logic later
  format-patch: read branch-specific output directory

 Documentation/config/format.txt    |  17 +-
 Documentation/git-format-patch.txt |  44 +-
 builtin/log.c                      | 237 ++++++---
 string-list.c                      |   9 +
 string-list.h                      |   7 +
 t/t4014-format-patch.sh            | 739 +++++++++++++++++------------
 6 files changed, 667 insertions(+), 386 deletions(-)

Range-diff against v2:
1:  92d7be10aa = 1:  82c0dc9cc8 t4014: clean up style
2:  930a021b7f ! 2:  a8cc599fd2 Doc: add more detail for git-format-patch
    @@ -9,7 +9,10 @@
     
         In addition, document the special value of `--base=auto`.
     
    -    Finally, while we're at it, surround option arguments with <>.
    +    Next, while we're at it, surround option arguments with <>.
    +
    +    Finally, document the `format.outputDirectory` config and change
    +    `format.coverletter` to use camelcase.
     
         Signed-off-by: Denton Liu <liu.denton@gmail.com>
     
    @@ -67,3 +70,25 @@
      
      --root::
      	Treat the revision argument as a <revision range>, even if it
    +@@
    + -------------
    + You can specify extra mail header lines to be added to each message,
    + defaults for the subject prefix and file suffix, number patches when
    +-outputting more than one patch, add "To" or "Cc:" headers, configure
    +-attachments, and sign off patches with configuration variables.
    ++outputting more than one patch, add "To:" or "Cc:" headers, configure
    ++attachments, change the patch output directory, and sign off patches
    ++with configuration variables.
    + 
    + ------------
    + [format]
    +@@
    + 	cc = <email>
    + 	attach [ = mime-boundary-string ]
    + 	signOff = true
    +-	coverletter = auto
    ++	outputDirectory = <directory>
    ++	coverLetter = auto
    + ------------
    + 
    + 
3:  075e2c0721 < -:  ---------- format-patch: make cover letter subject configurable
-:  ---------- > 3:  e3b8c96b1c format-patch: infer cover letter from branch description
4:  323179377e ! 4:  52ee126825 format-patch: move extra_headers logic later
    @@ -7,10 +7,10 @@
         logic later in the function so that this happens. (This patch is best
         viewed with `git diff --color-moved`.)
     
    -    Note that this logic only depends on the `git_config` and
    +    Note that this logic only depends on `git_config` and
         `repo_init_revisions` and is depended on by the patch creation logic
    -    which is directly below it so this move is effectively a no-op as
    -    no dependencies being reordered.
    +    which is directly below it so this move is effectively a no-op as no
    +    dependencies being reordered.
     
         Signed-off-by: Denton Liu <liu.denton@gmail.com>
     
5:  7a8fa4f5f6 = 5:  27c60c715c string-list: create string_list_append_all
6:  9d7338f067 ! 6:  f2a1546b2d format-patch: read branch-specific To: and Cc: headers
    @@ -59,29 +59,20 @@
      	far (from config or command line).
      
     @@
    - -------------
    - You can specify extra mail header lines to be added to each message,
    - defaults for the subject prefix and file suffix, number patches when
    --outputting more than one patch, add "To" or "Cc:" headers, configure
    -+outputting more than one patch, add "To:" or "Cc:" headers, configure
    - attachments, and sign off patches with configuration variables.
    - 
    - ------------
    -@@
    + 	inferCoverSubject = true
      ------------
      
    - In addition, for a specific branch, you can specify a custom cover
    --letter subject.
    ++In addition, for a specific branch, you can specify a custom cover
     +letter subject, and add additional "To:" or "Cc:" headers.
    - 
    - ------------
    - [format "branch-name"]
    - 	coverSubject = "subject for branch-name only"
    ++
    ++------------
    ++[format "branch-name"]
     +	to = <email>
     +	cc = <email>
    - ------------
    ++------------
      
      DISCUSSION
    + ----------
     
      diff --git a/builtin/log.c b/builtin/log.c
      --- a/builtin/log.c
    @@ -96,7 +87,7 @@
      static void add_header(const char *value)
      {
     @@
    - 	return 0;
    + 	fprintf(rev->diffopt.file, "\n");
      }
      
     +static void add_branch_headers(struct rev_info *rev, const char *branch_name)
    @@ -186,25 +177,6 @@
      		strbuf_addstr(&buf, extra_hdr.items[i].string);
      		strbuf_addch(&buf, '\n');
     
    - diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
    - --- a/t/t3200-branch.sh
    - +++ b/t/t3200-branch.sh
    -@@
    - 
    - test_expect_success 'test deleting branch deletes branch config' '
    - 	git config format.my7.coverSubject "cover subject" &&
    -+	git config format.my7.to "To Me <to@example.com>" &&
    -+	git config format.my7.cc "Cc Me <cc@example.com>" &&
    - 	git branch -d my7 &&
    - 	test -z "$(git config branch.my7.remote)" &&
    - 	test -z "$(git config branch.my7.merge)" &&
    - 	test -z "$(git config format.my7.coverSubject)"
    -+	test -z "$(git config format.my7.to)" &&
    -+	test -z "$(git config format.my7.cc)"
    - '
    - 
    - test_expect_success 'test deleting branch without config' '
    -
      diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
      --- a/t/t4014-format-patch.sh
      +++ b/t/t4014-format-patch.sh
-:  ---------- > 7:  70e28c5472 format-patch: move output_directory logic later
-:  ---------- > 8:  b23c3c16f7 format-patch: read branch-specific output directory