m4: Comments
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1 3.3 Comments in 'm4' input
1 ==========================
1
1 Comments in 'm4' are normally delimited by the characters '#' and
1 newline. All characters between the comment delimiters are ignored, but
1 the entire comment (including the delimiters) is passed through to the
1 output--comments are _not_ discarded by 'm4'.
1
1 Comments cannot be nested, so the first newline after a '#' ends the
1 comment. The commenting effect of the begin-comment string can be
1 inhibited by quoting it.
1
1 $ m4
1 `quoted text' # `commented text'
1 =>quoted text # `commented text'
1 `quoting inhibits' `#' `comments'
1 =>quoting inhibits # comments
1
1 The comment delimiters can be changed to any string at any time,
1 using the builtin macro 'changecom'. ⇒Changecom, for more
1 information.
1