From d672f8cb82878baf3834e938c4c416f4493952cf Mon Sep 17 00:00:00 2001 From: Ingo Schwarze Date: Sat, 15 Dec 2018 19:30:25 +0000 Subject: Several improvements to escape sequence handling. * Add the missing special character \_ (underscore). * Partial implementations of \a (leader character) and \E (uninterpreted escape character). * Parse and ignore \r (reverse line feed). * Add a WARNING message about undefined escape sequences. * Add an UNSUPP message about unsupported escape sequences. * Mark \! and \? (transparent throughput) and \O (suppress output) as unsupported. * Treat the various variants of zero-width spaces as one-byte escape sequences rather than as special characters, to avoid defining bogus forms with square brackets. * For special characters with one-byte names, do not define bogus forms with square brackets, except for \[-], which is valid. * In the form with square brackets, undefined special characters do not fall back to printing the name verbatim, not even for one-byte names. * Starting a special character name with a blank is an error. * Undefined escape sequences never abort formatting of the input string, not even in HTML output mode. * Document the newly handled escapes, and a few that were missing. * Regression tests for most of the above. --- mdoc_man.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'mdoc_man.c') diff --git a/mdoc_man.c b/mdoc_man.c index f3689dfc..c4e0be79 100644 --- a/mdoc_man.c +++ b/mdoc_man.c @@ -1,4 +1,4 @@ -/* $Id: mdoc_man.c,v 1.129 2018/12/03 21:00:10 schwarze Exp $ */ +/* $Id: mdoc_man.c,v 1.130 2018/12/15 19:30:26 schwarze Exp $ */ /* * Copyright (c) 2011-2018 Ingo Schwarze * @@ -325,6 +325,7 @@ man_strlen(const char *cp) case ESCAPE_UNICODE: case ESCAPE_NUMBERED: case ESCAPE_SPECIAL: + case ESCAPE_UNDEF: case ESCAPE_OVERSTRIKE: if (skip) skip = 0; -- cgit v1.2.3