Jonathan Nieder <[email protected]> writes:
> Perhaps something like the following would work?
>
> tree-wide: convert test -a/-o to && and ||
>
> The interaction with unary operators and operator precedence
> for && and || are better known than -a and -o, and for that
> reason we prefer them. Replace all existing instances in git
> of -a and -o to save readers from the burden of thinking
> about such things.
>
> Add a check-non-portable-shell.pl to avoid more instances of
> test -a and -o arising in the future.
Yeah, the title is certainly better than "-a or -b option" I see
above ;-) and a single tree-wide fix may be OK while the tree is
quiescent.
I however do think "better known" is much less of an issue than that
"-a/-o" is more error prone e.g. 'test -n "$x" -a a = b' is buggy
because it does not consider that $x could be "=".
> [...]
>> - test $status = D -o $status = T && echo "$sm_path" &&
>> continue
>> + ( test $status = D || test $status = T ) && echo
>> "$sm_path" && continue
>
> There's no need for a subshell for this. Better to use a block:
>
> {
> test "$status" = D ||
> test "$status" = T
> } &&
> echo "$sm_path" &&
> continue
Yes.
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