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. --- regress/roff/esc/one.in | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) (limited to 'regress/roff/esc/one.in') diff --git a/regress/roff/esc/one.in b/regress/roff/esc/one.in index 6edf9f64..6a4b22a8 100644 --- a/regress/roff/esc/one.in +++ b/regress/roff/esc/one.in @@ -1,17 +1,11 @@ .\" $OpenBSD: one.in,v 1.3 2017/07/04 14:53:27 schwarze Exp $ -.Dd $Mdocdate: July 4 2017 $ -.Dt ESC-ONE 1 -.Os -.Sh NAME -.Nm esc-one -.Nd roff one-character escape sequences -.Sh DESCRIPTION +.TH ESC-ONE 1 "December 15, 2018" +.SH NAME +esc-one \- roff one-character escape sequences +.SH DESCRIPTION +.nf backslash: >\e< -.br -minus: >\-< -.br +minus: >\-|\[-]< acute: >\'< -.br grave: >\`< -.br normal character: >\q< -- cgit v1.2.3-56-ge451