From Bugzilla Helper:
User-Agent: Mozilla/4.73 [en] (X11; I; SunOS 5.7 sun4u)

Description of problem:
Expansion of macros doesn't work when applied to parts of a statement, but on
the whole statement only.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:

1. Append to ~/.popt

rpmbuild	alias --config-with		--eval "%__autoconf_params_store	with	!#:+" \
		--POPTdesc=$"configure --with-<option> for build" \
		--POPTargs=$"<option>"
2. Append to ~/.rpmmacros

%__autoconf_params_append()						\
    %{expand:%%global %{1} %%{!?%{1}:%%{nil}}%%{?%{1}:%%{%{1}} }%{2}}	\
%{nil}

%__autoconf_params_store()						\
    %__autoconf_params_append %{expand:__autoconf_params_%{1} %{2}}	\
%{nil}

3. Put in the %build section of the .spec file used for the test

%dump

4. Run

rpmbuild -bp --nodeps --config-with foo=bar <test-spec-file>


Actual Results:

error: Unterminated {: {expand:__autoconf_params_%{1}
  4<         (empty)
  3<       (empty)
error: Macro % has illegal name (%define)



Additional info:

Things work with the following definition of %__autoconf_params_store():

%__autoconf_params_store()							\
    %{expand:%%__autoconf_params_append __autoconf_params_%{1} %{2}}		\
%{nil}