On 03/11/2011 11:32 AM, Eric Blake wrote:
> On 03/11/2011 11:17 AM, Too, Justin A. wrote:
>> Hi,
>>
>> I have a simple function in an m4 file that is a convenience to output information. The function takes two parameters
>>
>> function foo () {
>> If test $# != 2 ; then
>> exit 1
>> fi
>> }
>>
>> However, Autoconf expands $#. How can I escape $#, so that it will remain as-is in the configure script? I just can't figure this one out :)
>
> Several options, but I'd need to see more context to make sure of which
> one is right for your scenario.
>
> Have you tried $][# (that is, using the proper m4 quoting to break the
> m4 macro definition into two concatenated strings) or $[]# (that is,
> inject an extra m4 quoted empty string)? (Which one to use depends on
> what level of nesting the $# appears in your macro, and whether it is
> likely to go through another round of m4 expansion).
>
> And if all else fails - use quadrigraphs: @S|@#
For shell, you can also use ${#} instead of trying to get autoconf to
output literal $#.
--
Eric Blake eblake@xxxxxxxxxx +1-801-349-2682
Libvirt virtualization library http://libvirt.org
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