substitutions in pkg-plist

[Ricardo Nabinger Sanchez]

Hello,

While working on an non-public port, I noticed that when I used macros like 
%%ETCDIR%%, %%EXAMPLESDIR%%, inside @exec, @unexec and @dirrm/@dirrmtry,
the terminal output was as expected, but the commands would fail silently.

For instance, I tried this (pkg-plist):

@exec [ -d %%ETCDIR%%/socksarmor ] || mkdir -v %%ETCDIR%%/socksarmor
@unexec if cmp -s %%EXAMPLESDIR%%/socksarmor.config %%ETCDIR%%/socksarmor.config; then rm -f %%ETCDIR%%/socksarmor.config; fi
@unexec if cmp -s %%EXAMPLESDIR%%/socksarmor.xml %%ETCDIR%%/socksarmor.xml; then rm -f %%ETCDIR%%/socksarmor.xml; fi

When executing pkg_add or pkg_delete (both with -v), the terminal output
was fine, but things were not being executed.  In this very case, I could
confirm with ls that %%ETCDIR%%/socksarmor, for instance, was not being
created.  I copy-pasted the commands pkg_add printed, verbatim, and they
worked as expected.

After lots of googling and Mk browsing, I finally decided to partially
hardcode things and use %D whenever possible, getting this:

@exec [ -d %D/etc/socksarmor ] || mkdir -v %D/etc/socksarmor
@unexec if cmp -s %D/share/examples/socksarmor/socksarmor.config %D/etc/socksarmor/socksarmor.config; then rm -f %D/etc/socksarmor/socksarmor.config; fi
@unexec if cmp -s %D/share/examples/socksarmor/socksarmor.xml %D/etc/socksarmor/socksarmor.xml; then rm -f %D/etc/socksarmor/socksarmor.xml; fi

This works, but it is not clear why %%whatever%% macros fail silently.  I
couldn't find useful docs, perhaps because google strip %s off my queries.

Comments are appreciated.  :)
Regards.

-- 
Ricardo Nabinger Sanchez                   rnsanchez at wait4.org
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