Suppose I have two clones of a repo. "mac" has ignorecase=true and is on HFS+, and "lin" has ignorecase=false and is on ext4. With git 1.7.4, I have found some very unusual behavior. on mac (omitting all git output to save space): $ mkdir X $ echo mac > X/foo $ git add X/foo $ git commit -m "added X/foo" on lin (omitting all git output to save space): $ git pull mac master # now X/foo exists here $ mkdir x $ echo lin > x/foo $ git add x/foo $ git commit -m "added x/foo" on mac: $ git pull lin master [...] * branch master -> FETCH_HEAD Updating a3dbf10..2d4223d Fast-forward x/foo | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) create mode 100644 x/foo $ git status # On branch master # Changes not staged for commit: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # modified: X/foo # no changes added to commit (use "git add" and/or "git commit -a") $ git add X/foo $ git commit X # On branch master # Changes not staged for commit: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # modified: X/foo # no changes added to commit (use "git add" and/or "git commit -a") So, it's possible to get files that git thinks are changed, but cannot be committed. $ echo testing > X/foo $ git status # On branch master # Changes not staged for commit: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # modified: X/foo # modified: x/foo And it's possible to have multiple cases of the same file show up even though ignorecase=true. The problems don't end there. Suppose I have a program that expects to find a file in proggy/config. But, on mac, I already have a Proggy/Data file that I created & committed for some reason. No problem; I write my config to proggy/config; the program can read its file, I commit proggy/config, and all seems well. Now I clone to lin, and see: $ ls Proggy/Data Proggy/config $ proggy proggy: cannot open proggy/config: file does not exist Git 1.7.2.5 seems to handle both these cases better; the ignorecase rework in 1.7.4 introduced most of these problems AFAICS. -- see shy jo
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