Re: RFC: Use program_transform_name correctly

Andreas Schwab
2003-10-08T19:51:21Z

Daniel Jacobowitz <drow@mvista.com> writes:

> On Wed, Oct 08, 2003 at 02:17:26PM -0500, Jim Blandy wrote:
>>
>> Daniel Jacobowitz <drow@mvista.com> writes:
>> > Conveniently this is no longer an issue in the src repository (or in
>> > gcc). The toplevel configure script now guarantees that
>> > $(program_transform_name) will not be empty. So $$t it is.
>>
>> But doesn't that mean I can just say:
>>
>> sed '$(program_transform_name)'
>>
>> since Make substitution doesn't respect single quotes in shell
>> commands?
>
> I'm not sure. This is all complicated by the way that things get
> escaped if $(program_transform_name) contains a ' or a \. And sed
> scripts often do contain backslashes:
> --program-transform-name='s,(gdb),\1-6.0,'

Single quotes won't work in either case, whether you write

t='$(program_transform_name)'; sed $$t

or

sed '$(program_transform_name)'

but in the first case word splitting is performed on the sed argument.

Andreas.

--
Andreas Schwab, SuSE Labs, schwab@suse.de
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