[Autogen-users] --select-suffix (kind of) breaks header-file macro

[Dennis W. <dw...@ma...>]

Hi Bruce, hi list,

FYI a small gotcha I stumbled over today:

Suppose I have a template file that produces both foo.c and foo.h, and says

  #include "[+ (. header-file) +]"

somewhere. This will nicely expand to
  #include "foo.h"
in the usual cases. If I issue --select-suffix=c though, because I do
not want to regenerate foo.h right now, it expands to
  #include "/dev/null"
which is pretty irritating (and betrays the option's implementation :)

A workaround is to use

  #include "[+ (string-substitute (out-name) ".c" ".h") +]"

instead.
I am not saying this is a bug that needs fixing, but IMO it does
somewhat violate the "least-surprise" principle.

Cheers,
Dennis