Re: [PATCH 4/7] contrib/subtree: Better Error Handling for add

> "David A. Greene" <greened@obbligato.org> writes:
>
>> From: "David A. Greene" <greened@obbligato.org>
>>
>> Check refspecs for validity before passing them on to other commands.
>> This lets us generate more helpful error messages.
>>
>> Signed-off-by: David A. Greene <greened@obbligato.org>
>> ---
>>  contrib/subtree/git-subtree.sh |   12 +++++++++---
>>  1 file changed, 9 insertions(+), 3 deletions(-)
>>
>> diff --git a/contrib/subtree/git-subtree.sh b/contrib/subtree/git-subtree.sh
>> index cac0680..d53eaee 100755
>> --- a/contrib/subtree/git-subtree.sh
>> +++ b/contrib/subtree/git-subtree.sh
>> @@ -508,12 +508,18 @@ cmd_add()
>>  	ensure_clean
>>  	
>>  	if [ $# -eq 1 ]; then
>> -		"cmd_add_commit" "$@"
>> +	    git rev-parse -q --verify "$1^{commit}" >/dev/null ||
>> +            die "'$1' does not refer to a commit"
>
> Where do these uneven indentation come from?  Is it mimicking
> existing breakage in the script?