matt@oddjob.UChicago.EDU (I am not a Grook) (05/15/87)
Description: Any macros that come after a sharp-sign (#) are not expanded. Repeat-By: m4 << EOF define(`ignored', `recognized')dnl This macro is ignored But this # macro is ignored EOF The word "ignored" is changed to "recognized" in the first output line. The code makes it clear that this is intentional. The manual does not mention it. Which should be changed?
pdg@ihdev.UUCP (05/15/87)
In article <3780@oddjob.UChicago.EDU> matt@oddjob.uchicago.edu (I am not a Grook) writes: >Description: > Any macros that come after a sharp-sign (#) are not > expanded. True. A sharp is the comment indicator (left side) for m4. This can be easily changed with changecom() to disable comments, or something like changecom(/*,*/). Try this: m4<<! define(xyzzy,plugh) the magic word is xyzzy the magic word is # xyzzy changecom(/*,*/) the magic word is # xyzzy the magic word is /* xyzzy */ ! -- Paul Guthrie ihnp4!ihdev!pdg This Brain left intentionally blank.
rossc@metro.oz (Ross Cartlidge) (05/17/87)
In article <3780@oddjob.UChicago.EDU> matt@oddjob.uchicago.edu (I am not a Grook) writes: >Description: > Any macros that come after a sharp-sign (#) are not > expanded. >Repeat-By: By default everything from a # to the end of line is treated as a m4 comment as is left unprocessed. See "changecom" in m4(1) SysV.