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| author |   Ingo Schwarze <schwarze@openbsd.org> | 2014-10-12 19:31:41 +0000 |
|---|---|---|
| committer | Ingo Schwarze <schwarze@openbsd.org> | 2014-10-12 19:31:41 +0000 |
| commit | 9bdc68b0e9c4ef307f52f16b3727a115cf20e060 (patch) | |
| tree | 553f1dc246856c95ce4fc3c65ac2c4abdcb2f4bd /mandoc.h | |
| parent | 714b0f49e6eaefc48e0a4bc4859300de82444b58 (diff) | |
| download | mandoc-9bdc68b0e9c4ef307f52f16b3727a115cf20e060.tar.gz mandoc-9bdc68b0e9c4ef307f52f16b3727a115cf20e060.tar.zst mandoc-9bdc68b0e9c4ef307f52f16b3727a115cf20e060.zip | |
Improve error handling in the eqn(7) parser.
Get rid of the first fatal error, MANDOCERR_EQNSYNT.
In eqn(7), there is no need to be bug-compatible with groff, so there
is no need to abondon the whole equation in case of a syntax error.
In particular:
* Skip "back", "delim", "down", "fwd", "gfont", "gsize", "left",
"right", "size", and "up" without arguments.
* Skip "gsize" and "size" with a non-numeric argument.
* Skip closing delimiters that are not open.
* Skip "above" outside piles.
* For diacritic marks and binary operators without a left operand,
default to an empty box.
* Let piles and matrices take one argument rather than insisting
on a braced list. Let HTML output handle that, too.
* When rewinding, if the root box is guaranteed to match
the termination condition, no error handling is needed.
Diffstat (limited to 'mandoc.h')
| -rw-r--r-- | mandoc.h | 4 |
1 files changed, 2 insertions, 2 deletions
@@ -1,4 +1,4 @@ -/* $Id: mandoc.h,v 1.161 2014/10/11 21:14:16 schwarze Exp $ */ +/* $Id: mandoc.h,v 1.162 2014/10/12 19:31:41 schwarze Exp $ */ /* * Copyright (c) 2010, 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv> * Copyright (c) 2010-2014 Ingo Schwarze <schwarze@openbsd.org> @@ -104,6 +104,7 @@ enum mandocerr { MANDOCERR_BF_NOFONT, /* missing font type, using \fR: Bf */ MANDOCERR_BF_BADFONT, /* unknown font type, using \fR: Bf font */ MANDOCERR_ARG_STD, /* missing -std argument, adding it: macro */ + MANDOCERR_EQN_NOBOX, /* missing eqn box, using "": op */ /* related to bad arguments */ MANDOCERR_ARG_QUOTE, /* unterminated quoted argument */ @@ -134,7 +135,6 @@ enum mandocerr { MANDOCERR_EQNSCOPE, /* equation scope open on exit */ MANDOCERR_EQNBADSCOPE, /* overlapping equation scopes */ MANDOCERR_EQNEOF, /* unexpected end of equation */ - MANDOCERR_EQNSYNT, /* equation syntax error */ /* related to tables */ MANDOCERR_TBL, /* bad table syntax */ |