git branch case insensitivity (Possible bug)

Hello,

Here is a pastebin where I've reproduced the steps on a clean git repo.

http://pastebin.com/0vQZEat0

Brief description of the problem:

1.Basically one creates a local branch call it 'imp_fix' (branch off
master --> this doesn't matter)
2.One does work, commit, etc
3.One rebases imp_fix with master via: (inside imp_fix) git rebase master
4.One checks out master via: git checkout master
5.One merges an incorrect name "imp_Fix" (notice the capital F)
6.The expected output is that git would say, silly you --> that branch
does not exist.
7. Instead it merges (what I think is incorrectly) imp_fix.

Kindly let me know if I can provide more details.

For your convenience here is the paste:

agallego@agallego-macpro.local] /tmp $ git clone git@bitbucket.org/agallego/gitbug Cloning into 'gitbug'... warning: You appear to have cloned an empty repository.

[agallego@agallego-macpro.local] /tmp $ cd gitbug

[agallego@agallego-macpro.local] /tmp/gitbug $ ls

[agallego@agallego-macpro.local] /tmp/gitbug $ echo "Trying to reproduce a bug" > README

[agallego@agallego-macpro.local] /tmp/gitbug $ ls README

[agallego@agallego-macpro.local] /tmp/gitbug $ git add .

[agallego@agallego-macpro.local] /tmp/gitbug
$ git commit -am "adding readme"
[master (root-commit) 0bfd62a] adding readme
 1 files changed, 1 insertions(+), 0 deletions(-)
 create mode 100644 README

[agallego@agallego-macpro.local] /tmp/gitbug
$ git push origin master
Counting objects: 3, done.
Writing objects: 100% (3/3), 230 bytes, done.
Total 3 (delta 0), reused 0 (delta 0)
remote: bb/acl: agallego is allowed. accepted payload.
To git@bitbucket.org:agallego/gitbug
 * [new branch]      master -> master

[agallego@agallego-macpro.local] /tmp/gitbug $ git checkout imp_fix error: pathspec 'imp_fix' did not match any file(s) known to git.

[agallego@agallego-macpro.local] /tmp/gitbug $ git branch imp_fix

[agallego@agallego-macpro.local] /tmp/gitbug $ git checkout imp_fix Switched to branch 'imp_fix'

[agallego@agallego-macpro.local] /tmp/gitbug $ echo "imp_fix" >> README

[agallego@agallego-macpro.local] /tmp/gitbug
$ git commit -am "step 2, create an imp_fix branch and then merge"
[imp_fix 178c8f3] step 2, create an imp_fix branch and then merge
 1 files changed, 1 insertions(+), 0 deletions(-)

[agallego@agallego-macpro.local] /tmp/gitbug $ ls README

[agallego@agallego-macpro.local] /tmp/gitbug $ git rebase master Current branch imp_fix is up to date.

[agallego@agallego-macpro.local] /tmp/gitbug $ git checkout master Switched to branch 'master'

[agallego@agallego-macpro.local] /tmp/gitbug
$ git merge imp_Fix
Merge made by the 'recursive' strategy.
 README |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

[agallego@agallego-macpro.local] /tmp/gitbug
$ git push origin master
Counting objects: 6, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (2/2), done.
Writing objects: 100% (4/4), 392 bytes, done.
Total 4 (delta 1), reused 0 (delta 0)
remote: bb/acl: agallego is allowed. accepted payload.
To git@bitbucket.org:agallego/gitbug
   0bfd62a..f99f8a1  master -> master

Sincerely, Alexander Gallego

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