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[gnulib.git] / doc / error.texi

diff --git a/doc/error.texi b/doc/error.texi
index 8668359..24ab0a0 100644 (file)
--- a/doc/error.texi
+++ b/doc/error.texi
@@ -18,5 +18,9 @@ does not depend on the @code{progname} module.  Why?  Because
 @code{error} is released under the LGPL, whereas @code{progname} is
 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 
+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.