Mailinglist Archive: radeonhd (529 mails)

[Matthias Hopf <mhopf@xxxxxxx>]

On Dec 04, 07 18:51:12 +0100, Hans Ulrich Niedermann wrote:
> $(cmd) is not a bashism. $(cmd) is POSIX sh, and is supported by most
> shs even if they are not strictly POSIX in other ways.

Ok, didn't know that this is POSIX now. I just remember the days when
one had to write 'if [ "x$1" != x ] ; then' in order to not get bashed
by sh (what a phrase ;)

> Correct quoting with $() is easy (for file and directory names with
> spaces e.g.). Correct quoting and escaping with `` frankly escapes me,
> though, and IIRC there were some things that could not be quoted
> correctly at all with ``. You're welcome to help me there, of course.

It's not as complex - as long as no additional ` is included, all
escaping in the subshell is unrelated, so
   a="`cmd "single argument"`"
is perfectly valid and working.

Nevertheless, you're used to $(), so keep it.

> E.g. git's scripts use sh functions and $() substitution.

Strong point.

Matthias

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