Extra space at end of custom status line

[Phil Richardson]

If any custom script executed / included for the custom status line returns no output, it is handled by appending it as if no escape code was provided.

This results in a simple append of a space for any items that do not output.

A simple check to ensure $str contains a value will avoid, before appending to output.

[Dustin Kirkland  (kirkland)]

Hmm, well there is an empty string check, but then we run sed on it, which might result in an empty string:

        if [ -z "$output" ]; then
                rm -f "$BYOBU_RUN_DIR/status.$BYOBU_BACKEND/custom"*
                return
        fi
        printf "$output" | $BYOBU_SED ':a;N;$!ba;s/\n//g'