POSIX Issue 8 added support for pattern substitution variable references
like the following:
$(foo:%=pfx_%_sfx)
When such a variable reference is added to TESTS, directly or indirectly
(with delayed expansion), the substitution part is discarded, becoming
$(foo). For example:
TESTS = $(foo:%=pfx_%_sfx)
effectively becomes:
TESTS = $(foo)
The same is true for non-pattern suffix replacement references, which
have been in POSIX since at least Issue 5 (1997). For example:
TESTS = $(foo:.ext1=.ext2)
effectively becomes:
TESTS = $(foo)
Tested with:
* git master branch
* 1.16.5 packaged in Ubuntu
Not tested:
* whether other variables are also affected
* whether this is a recent breakage or a longstanding bug
I did not see any mention of this issue in the manual or existing bug
reports. Please let me know if I overlooked something.
I will send a patch adding test cases as soon as I know what this bug's
number will be. I am willing to propose patches to fix this; a pointer
to where in the code this bug lives would be appreciated.
Thanks,
Richard
