[PATCH v3] branch: allow "-" as a short-hand for "previous branch"

[Rubén Justo <rjusto@xxxxxxxxx>]

From: Rubén Justo <rjusto@xxxxxxxxx>

Align "branch -d" with the intuitive use of "-" as a short-hand
for "@{-1}", like in "checkout", "rebase" and "merge" commands.

$ git branch -d -      # short-hand for: "git branch -d @{-1}"
$ git branch -D -      # short-hand for: "git branch -D @{-1}"

So I can do:

$ git checkout work_to_review
$ git checkout -
$ git merge - # or git rebase -
$ git branch -d -

Signed-off-by: Rubén Justo <rjusto@xxxxxxxxx>
---
    branch: allow "-" as a short-hand for "previous branch"

    Align "branch -d" with the intuitive use of "-" as a short-hand for
    "@{-1}", like in "checkout", "rebase" and "merge" commands.

    $ git branch -d - # short-hand for: "git branch -d @{-1}" $ git branch
    -D - # short-hand for: "git branch -D @{-1}"

    So I can do:

    $ git checkout work_to_review $ git checkout - $ git merge - # or git
    rebase - $ git branch -d -

    Signed-off-by: Rubén Justo rjusto@xxxxxxxxx

Published-As: 
https://github.com/gitgitgadget/git/releases/tag/pr-1315%2Frjusto%2Fmaster-v3
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git 
pr-1315/rjusto/master-v3
Pull-Request: https://github.com/gitgitgadget/git/pull/1315

Range-diff vs v2:

 1:  0fe48ada15b ! 1:  cc28546aea9 allow "-" as short-hand for "@{-1}" 
in "branch -d"
     @@
       ## Metadata ##
     -Author: rjusto <rjusto@xxxxxxxxx>
     +Author: Rubén Justo <rjusto@xxxxxxxxx>

       ## Commit message ##
     -    allow "-" as short-hand for "@{-1}" in "branch -d"
     +    branch: allow "-" as short-hand for "@{-1}" in "branch -d"

          Align "branch -d" with the intuitive use of "-" as a short-hand
          for "@{-1}", like in "checkout", "rebase" and "merge" commands.
     @@ Commit message
          $ git merge - # or git rebase -
          $ git branch -d -

     -    Signed-off-by: rjusto <rjusto@xxxxxxxxx>
     +    Signed-off-by: Rubén Justo <rjusto@xxxxxxxxx>

       ## builtin/branch.c ##
      @@ builtin/branch.c: static int delete_branches(int argc, const 
char **argv, int force, int kinds,


 builtin/branch.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/builtin/branch.c b/builtin/branch.c
index 55cd9a6e998..7f7589bd4a8 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -241,6 +241,9 @@ static int delete_branches(int argc, const char 
**argv, int force, int kinds,
 			die(_("Couldn't look up commit object for HEAD"));
 	}

+	if ((argc == 1) && !strcmp(argv[0], "-"))
+		argv[0] = "@{-1}";
+
 	for (i = 0; i < argc; i++, strbuf_reset(&bname)) {
 		char *target = NULL;
 		int flags = 0;

base-commit: 679aad9e82d0dfd8ef3d1f98fa4629665496cec9
--
2.36.1