* m4/regex.m4 (gl_REGEX): Catch a bug with [[:alnum:]_-] reported by

[gnulib.git] / doc / error.texi

diff --git a/doc/error.texi b/doc/error.texi
index 8668359..3a80486 100644 (file)
--- a/doc/error.texi
+++ b/doc/error.texi
@@ -20,3 +20,7 @@ GPL.  RMS does not want additional baggage accompanying the
 @code{error} module, so an LGPL user must provide their own
 replacement @code{program_name}, and a GPL user should manually 
 specify using the @code{progname} module.
+
+Additionally, using the @code{progname} module is not something that
+can be done implicitly. It requires that every @code{main()} function
+be modified to set @code{program_name} as one of its first actions.