Re: [PATCH 2/2] Feature Request: user defined suffix for temp files created by git-mergetool

[Junio C Hamano <gitster@pobox.com>]

Josef Ridky <jridky@redhat.com> writes:

> +	--local=*)
> +		temp_name=${1#--local=}
> +		if [ "$temp_name" != "" ] && [ "$temp_name" != "$REMOTE_NAME" ] && [ "$temp_name" != "$BASE_NAME" ] && [ "$temp_name" != "$BACKUP_NAME" ]
> +		then
> +			LOCAL_NAME=$temp_name
> +		fi

It is not a good idea to ignore an explicit user request without
giving any indication and without giving any explanation.

You may have noticed that we do not say "[ cond ]" in this shell
script (we say "test" instead; see Documentation/CodingGuidelines).

Instead of having such a test all over the place, I'd suggest doing
it outside the loop:

    while test $# != 0
    do
	case "$1" in
	...
	--local=*)
		LOCAL_NAME=${1#--local=} ;;
	--remote=*)                
		REMOTE_NAME=${1#--local=} ;;
	...
        esac
    done
    
    # sanity check _after_ parsing the command line
    case ",$LOCAL_NAME,$REMOTE_NAME,$BASE_NAME,$BACKUP_NAME," in
    *,,*) die "You cannot set --local/remote/... to empty" ;;
    esac
    ... similarly, duplicate check comes here ...