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author | Ingo Schwarze <schwarze@openbsd.org> | 2020-06-22 18:00:30 +0000 |
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committer | Ingo Schwarze <schwarze@openbsd.org> | 2020-06-22 18:00:30 +0000 |
commit | 5d8b8229b2d8a64077ef83efbe26644564aa435f (patch) | |
tree | 17ca3d95165fdf24f3d9727394ba2a5acb0967c6 | |
parent | b28f36c493960262afac5600d250b2e8adc286e8 (diff) | |
download | mandoc-5d8b8229b2d8a64077ef83efbe26644564aa435f.tar.gz mandoc-5d8b8229b2d8a64077ef83efbe26644564aa435f.tar.zst mandoc-5d8b8229b2d8a64077ef83efbe26644564aa435f.zip |
John Gardner: handling of ASCII control characters during input
-rw-r--r-- | TODO | 16 |
1 files changed, 15 insertions, 1 deletions
@@ -1,6 +1,6 @@ ************************************************************************ * Official mandoc TODO. -* $Id: TODO,v 1.302 2020/04/26 21:41:07 schwarze Exp $ +* $Id: TODO,v 1.303 2020/06/22 18:00:30 schwarze Exp $ ************************************************************************ Many issues are annotated for difficulty as follows: @@ -83,6 +83,20 @@ are mere guesses, and some may be wrong. Jan Stary 20 Apr 2019 20:16:54 +0200 loc * exist *** algo *** size ** imp * +- mandoc replaces all ASCII control characters except tab and line feed + with '?' during input. It would be better to replace them with + Unicode escapes in preconv_encode() or somewhere in the vicinity, + such that the already existing better replacement strings show + up in the output. Emulating groff is not desirable: groff replaces + 0x00, 0x0b, and 0x0d to 0x1f with the empty string (bad because + that's easy to overlook for the document author), 0x01 with '.' + (very confusing), and passes through 0x02 to 0x08, 0x0c, and 0x7f + raw (bad because that is insecure output). Remember that 0x07 may + need special handling because it is sometimes used for certain + delimiters, so it may need handling *after* roff.c rather than before. + reminded by John Gardner 16 Jun 2020 14:26:28 +1000 + loc ** exist ** algo ** size ** imp * + --- missing mdoc features ---------------------------------------------- - .Sh and .Ss should be parsed and partially callable, see groff_mdoc(7) |