472 lines
18 KiB
C
472 lines
18 KiB
C
/* $Id: mandoc.h,v 1.248 2018/07/28 18:34:15 schwarze Exp $ */
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/*
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* Copyright (c) 2010, 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
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* Copyright (c) 2010-2018 Ingo Schwarze <schwarze@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#define ASCII_NBRSP 31 /* non-breaking space */
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#define ASCII_HYPH 30 /* breakable hyphen */
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#define ASCII_BREAK 29 /* breakable zero-width space */
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/*
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* Status level. This refers to both internal status (i.e., whilst
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* running, when warnings/errors are reported) and an indicator of a
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* threshold of when to halt (when said internal state exceeds the
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* threshold).
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*/
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enum mandoclevel {
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MANDOCLEVEL_OK = 0,
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MANDOCLEVEL_STYLE, /* style suggestions */
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MANDOCLEVEL_WARNING, /* warnings: syntax, whitespace, etc. */
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MANDOCLEVEL_ERROR, /* input has been thrown away */
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MANDOCLEVEL_UNSUPP, /* input needs unimplemented features */
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MANDOCLEVEL_BADARG, /* bad argument in invocation */
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MANDOCLEVEL_SYSERR, /* system error */
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MANDOCLEVEL_MAX
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};
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/*
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* All possible things that can go wrong within a parse, be it libroff,
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* libmdoc, or libman.
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*/
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enum mandocerr {
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MANDOCERR_OK,
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MANDOCERR_BASE, /* ===== start of base system conventions ===== */
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MANDOCERR_MDOCDATE, /* Mdocdate found: Dd ... */
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MANDOCERR_MDOCDATE_MISSING, /* Mdocdate missing: Dd ... */
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MANDOCERR_ARCH_BAD, /* unknown architecture: Dt ... arch */
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MANDOCERR_OS_ARG, /* operating system explicitly specified: Os ... */
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MANDOCERR_RCS_MISSING, /* RCS id missing */
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MANDOCERR_XR_BAD, /* referenced manual not found: Xr name sec */
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MANDOCERR_STYLE, /* ===== start of style suggestions ===== */
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MANDOCERR_DATE_LEGACY, /* legacy man(7) date format: Dd ... */
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MANDOCERR_DATE_NORM, /* normalizing date format to: ... */
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MANDOCERR_TITLE_CASE, /* lower case character in document title */
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MANDOCERR_RCS_REP, /* duplicate RCS id: ... */
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MANDOCERR_SEC_TYPO, /* possible typo in section name: Sh ... */
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MANDOCERR_ARG_QUOTE, /* unterminated quoted argument */
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MANDOCERR_MACRO_USELESS, /* useless macro: macro */
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MANDOCERR_BX, /* consider using OS macro: macro */
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MANDOCERR_ER_ORDER, /* errnos out of order: Er ... */
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MANDOCERR_ER_REP, /* duplicate errno: Er ... */
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MANDOCERR_DELIM, /* trailing delimiter: macro ... */
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MANDOCERR_DELIM_NB, /* no blank before trailing delimiter: macro ... */
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MANDOCERR_FI_SKIP, /* fill mode already enabled, skipping: fi */
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MANDOCERR_NF_SKIP, /* fill mode already disabled, skipping: nf */
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MANDOCERR_DASHDASH, /* verbatim "--", maybe consider using \(em */
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MANDOCERR_FUNC, /* function name without markup: name() */
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MANDOCERR_SPACE_EOL, /* whitespace at end of input line */
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MANDOCERR_COMMENT_BAD, /* bad comment style */
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MANDOCERR_WARNING, /* ===== start of warnings ===== */
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/* related to the prologue */
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MANDOCERR_DT_NOTITLE, /* missing manual title, using UNTITLED: line */
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MANDOCERR_TH_NOTITLE, /* missing manual title, using "": [macro] */
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MANDOCERR_MSEC_MISSING, /* missing manual section, using "": macro */
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MANDOCERR_MSEC_BAD, /* unknown manual section: Dt ... section */
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MANDOCERR_DATE_MISSING, /* missing date, using today's date */
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MANDOCERR_DATE_BAD, /* cannot parse date, using it verbatim: date */
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MANDOCERR_DATE_FUTURE, /* date in the future, using it anyway: date */
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MANDOCERR_OS_MISSING, /* missing Os macro, using "" */
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MANDOCERR_PROLOG_LATE, /* late prologue macro: macro */
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MANDOCERR_PROLOG_ORDER, /* prologue macros out of order: macros */
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/* related to document structure */
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MANDOCERR_SO, /* .so is fragile, better use ln(1): so path */
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MANDOCERR_DOC_EMPTY, /* no document body */
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MANDOCERR_SEC_BEFORE, /* content before first section header: macro */
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MANDOCERR_NAMESEC_FIRST, /* first section is not NAME: Sh title */
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MANDOCERR_NAMESEC_NONM, /* NAME section without Nm before Nd */
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MANDOCERR_NAMESEC_NOND, /* NAME section without description */
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MANDOCERR_NAMESEC_ND, /* description not at the end of NAME */
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MANDOCERR_NAMESEC_BAD, /* bad NAME section content: macro */
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MANDOCERR_NAMESEC_PUNCT, /* missing comma before name: Nm name */
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MANDOCERR_ND_EMPTY, /* missing description line, using "" */
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MANDOCERR_ND_LATE, /* description line outside NAME section */
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MANDOCERR_SEC_ORDER, /* sections out of conventional order: Sh title */
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MANDOCERR_SEC_REP, /* duplicate section title: Sh title */
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MANDOCERR_SEC_MSEC, /* unexpected section: Sh title for ... only */
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MANDOCERR_XR_SELF, /* cross reference to self: Xr name sec */
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MANDOCERR_XR_ORDER, /* unusual Xr order: ... after ... */
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MANDOCERR_XR_PUNCT, /* unusual Xr punctuation: ... after ... */
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MANDOCERR_AN_MISSING, /* AUTHORS section without An macro */
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/* related to macros and nesting */
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MANDOCERR_MACRO_OBS, /* obsolete macro: macro */
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MANDOCERR_MACRO_CALL, /* macro neither callable nor escaped: macro */
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MANDOCERR_PAR_SKIP, /* skipping paragraph macro: macro ... */
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MANDOCERR_PAR_MOVE, /* moving paragraph macro out of list: macro */
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MANDOCERR_NS_SKIP, /* skipping no-space macro */
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MANDOCERR_BLK_NEST, /* blocks badly nested: macro ... */
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MANDOCERR_BD_NEST, /* nested displays are not portable: macro ... */
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MANDOCERR_BL_MOVE, /* moving content out of list: macro */
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MANDOCERR_TA_LINE, /* first macro on line: Ta */
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MANDOCERR_BLK_LINE, /* line scope broken: macro breaks macro */
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MANDOCERR_BLK_BLANK, /* skipping blank line in line scope */
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/* related to missing arguments */
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MANDOCERR_REQ_EMPTY, /* skipping empty request: request */
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MANDOCERR_COND_EMPTY, /* conditional request controls empty scope */
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MANDOCERR_MACRO_EMPTY, /* skipping empty macro: macro */
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MANDOCERR_BLK_EMPTY, /* empty block: macro */
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MANDOCERR_ARG_EMPTY, /* empty argument, using 0n: macro arg */
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MANDOCERR_BD_NOTYPE, /* missing display type, using -ragged: Bd */
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MANDOCERR_BL_LATETYPE, /* list type is not the first argument: Bl arg */
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MANDOCERR_BL_NOWIDTH, /* missing -width in -tag list, using 6n */
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MANDOCERR_EX_NONAME, /* missing utility name, using "": Ex */
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MANDOCERR_FO_NOHEAD, /* missing function name, using "": Fo */
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MANDOCERR_IT_NOHEAD, /* empty head in list item: Bl -type It */
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MANDOCERR_IT_NOBODY, /* empty list item: Bl -type It */
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MANDOCERR_IT_NOARG, /* missing argument, using next line: Bl -c It */
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MANDOCERR_BF_NOFONT, /* missing font type, using \fR: Bf */
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MANDOCERR_BF_BADFONT, /* unknown font type, using \fR: Bf font */
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MANDOCERR_PF_SKIP, /* nothing follows prefix: Pf arg */
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MANDOCERR_RS_EMPTY, /* empty reference block: Rs */
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MANDOCERR_XR_NOSEC, /* missing section argument: Xr arg */
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MANDOCERR_ARG_STD, /* missing -std argument, adding it: macro */
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MANDOCERR_OP_EMPTY, /* missing option string, using "": OP */
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MANDOCERR_UR_NOHEAD, /* missing resource identifier, using "": UR */
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MANDOCERR_EQN_NOBOX, /* missing eqn box, using "": op */
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/* related to bad arguments */
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MANDOCERR_ARG_REP, /* duplicate argument: macro arg */
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MANDOCERR_AN_REP, /* skipping duplicate argument: An -arg */
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MANDOCERR_BD_REP, /* skipping duplicate display type: Bd -type */
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MANDOCERR_BL_REP, /* skipping duplicate list type: Bl -type */
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MANDOCERR_BL_SKIPW, /* skipping -width argument: Bl -type */
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MANDOCERR_BL_COL, /* wrong number of cells */
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MANDOCERR_AT_BAD, /* unknown AT&T UNIX version: At version */
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MANDOCERR_FA_COMMA, /* comma in function argument: arg */
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MANDOCERR_FN_PAREN, /* parenthesis in function name: arg */
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MANDOCERR_LB_BAD, /* unknown library name: Lb ... */
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MANDOCERR_RS_BAD, /* invalid content in Rs block: macro */
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MANDOCERR_SM_BAD, /* invalid Boolean argument: macro arg */
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MANDOCERR_FT_BAD, /* unknown font, skipping request: ft font */
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MANDOCERR_TR_ODD, /* odd number of characters in request: tr char */
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/* related to plain text */
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MANDOCERR_FI_BLANK, /* blank line in fill mode, using .sp */
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MANDOCERR_FI_TAB, /* tab in filled text */
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MANDOCERR_EOS, /* new sentence, new line */
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MANDOCERR_ESC_BAD, /* invalid escape sequence: esc */
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MANDOCERR_STR_UNDEF, /* undefined string, using "": name */
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/* related to tables */
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MANDOCERR_TBLLAYOUT_SPAN, /* tbl line starts with span */
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MANDOCERR_TBLLAYOUT_DOWN, /* tbl column starts with span */
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MANDOCERR_TBLLAYOUT_VERT, /* skipping vertical bar in tbl layout */
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MANDOCERR_ERROR, /* ===== start of errors ===== */
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/* related to tables */
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MANDOCERR_TBLOPT_ALPHA, /* non-alphabetic character in tbl options */
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MANDOCERR_TBLOPT_BAD, /* skipping unknown tbl option: option */
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MANDOCERR_TBLOPT_NOARG, /* missing tbl option argument: option */
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MANDOCERR_TBLOPT_ARGSZ, /* wrong tbl option argument size: option */
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MANDOCERR_TBLLAYOUT_NONE, /* empty tbl layout */
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MANDOCERR_TBLLAYOUT_CHAR, /* invalid character in tbl layout: char */
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MANDOCERR_TBLLAYOUT_PAR, /* unmatched parenthesis in tbl layout */
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MANDOCERR_TBLDATA_NONE, /* tbl without any data cells */
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MANDOCERR_TBLDATA_SPAN, /* ignoring data in spanned tbl cell: data */
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MANDOCERR_TBLDATA_EXTRA, /* ignoring extra tbl data cells: data */
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MANDOCERR_TBLDATA_BLK, /* data block open at end of tbl: macro */
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/* related to document structure and macros */
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MANDOCERR_FILE, /* cannot open file */
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MANDOCERR_PROLOG_REP, /* duplicate prologue macro: macro */
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MANDOCERR_DT_LATE, /* skipping late title macro: Dt args */
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MANDOCERR_ROFFLOOP, /* input stack limit exceeded, infinite loop? */
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MANDOCERR_CHAR_BAD, /* skipping bad character: number */
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MANDOCERR_MACRO, /* skipping unknown macro: macro */
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MANDOCERR_REQ_INSEC, /* skipping insecure request: request */
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MANDOCERR_IT_STRAY, /* skipping item outside list: It ... */
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MANDOCERR_TA_STRAY, /* skipping column outside column list: Ta */
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MANDOCERR_BLK_NOTOPEN, /* skipping end of block that is not open */
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MANDOCERR_RE_NOTOPEN, /* fewer RS blocks open, skipping: RE arg */
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MANDOCERR_BLK_BROKEN, /* inserting missing end of block: macro ... */
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MANDOCERR_BLK_NOEND, /* appending missing end of block: macro */
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/* related to request and macro arguments */
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MANDOCERR_NAMESC, /* escaped character not allowed in a name: name */
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MANDOCERR_BD_FILE, /* NOT IMPLEMENTED: Bd -file */
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MANDOCERR_BD_NOARG, /* skipping display without arguments: Bd */
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MANDOCERR_BL_NOTYPE, /* missing list type, using -item: Bl */
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MANDOCERR_CE_NONUM, /* argument is not numeric, using 1: ce ... */
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MANDOCERR_NM_NONAME, /* missing manual name, using "": Nm */
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MANDOCERR_OS_UNAME, /* uname(3) system call failed, using UNKNOWN */
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MANDOCERR_ST_BAD, /* unknown standard specifier: St standard */
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MANDOCERR_IT_NONUM, /* skipping request without numeric argument */
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MANDOCERR_SO_PATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */
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MANDOCERR_SO_FAIL, /* .so request failed */
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MANDOCERR_ARG_SKIP, /* skipping all arguments: macro args */
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MANDOCERR_ARG_EXCESS, /* skipping excess arguments: macro ... args */
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MANDOCERR_DIVZERO, /* divide by zero */
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MANDOCERR_UNSUPP, /* ===== start of unsupported features ===== */
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MANDOCERR_TOOLARGE, /* input too large */
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MANDOCERR_CHAR_UNSUPP, /* unsupported control character: number */
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MANDOCERR_REQ_UNSUPP, /* unsupported roff request: request */
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MANDOCERR_TBLOPT_EQN, /* eqn delim option in tbl: arg */
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MANDOCERR_TBLLAYOUT_MOD, /* unsupported tbl layout modifier: m */
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MANDOCERR_TBLMACRO, /* ignoring macro in table: macro */
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MANDOCERR_MAX
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};
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struct tbl_opts {
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char tab; /* cell-separator */
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char decimal; /* decimal point */
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int opts;
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#define TBL_OPT_CENTRE (1 << 0)
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#define TBL_OPT_EXPAND (1 << 1)
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#define TBL_OPT_BOX (1 << 2)
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#define TBL_OPT_DBOX (1 << 3)
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#define TBL_OPT_ALLBOX (1 << 4)
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#define TBL_OPT_NOKEEP (1 << 5)
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#define TBL_OPT_NOSPACE (1 << 6)
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#define TBL_OPT_NOWARN (1 << 7)
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int cols; /* number of columns */
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int lvert; /* width of left vertical line */
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int rvert; /* width of right vertical line */
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};
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enum tbl_cellt {
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TBL_CELL_CENTRE, /* c, C */
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TBL_CELL_RIGHT, /* r, R */
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TBL_CELL_LEFT, /* l, L */
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TBL_CELL_NUMBER, /* n, N */
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TBL_CELL_SPAN, /* s, S */
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TBL_CELL_LONG, /* a, A */
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TBL_CELL_DOWN, /* ^ */
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TBL_CELL_HORIZ, /* _, - */
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TBL_CELL_DHORIZ, /* = */
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TBL_CELL_MAX
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};
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/*
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* A cell in a layout row.
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*/
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struct tbl_cell {
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struct tbl_cell *next;
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char *wstr; /* min width represented as a string */
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size_t width; /* minimum column width */
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size_t spacing; /* to the right of the column */
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int vert; /* width of subsequent vertical line */
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int col; /* column number, starting from 0 */
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int flags;
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#define TBL_CELL_TALIGN (1 << 0) /* t, T */
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#define TBL_CELL_BALIGN (1 << 1) /* d, D */
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#define TBL_CELL_BOLD (1 << 2) /* fB, B, b */
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#define TBL_CELL_ITALIC (1 << 3) /* fI, I, i */
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#define TBL_CELL_EQUAL (1 << 4) /* e, E */
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#define TBL_CELL_UP (1 << 5) /* u, U */
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#define TBL_CELL_WIGN (1 << 6) /* z, Z */
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#define TBL_CELL_WMAX (1 << 7) /* x, X */
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enum tbl_cellt pos;
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};
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/*
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* A layout row.
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*/
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struct tbl_row {
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struct tbl_row *next;
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struct tbl_cell *first;
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struct tbl_cell *last;
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int vert; /* width of left vertical line */
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};
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enum tbl_datt {
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TBL_DATA_NONE, /* has no data */
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TBL_DATA_DATA, /* consists of data/string */
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TBL_DATA_HORIZ, /* horizontal line */
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TBL_DATA_DHORIZ, /* double-horizontal line */
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TBL_DATA_NHORIZ, /* squeezed horizontal line */
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TBL_DATA_NDHORIZ /* squeezed double-horizontal line */
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};
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/*
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* A cell within a row of data. The "string" field contains the actual
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* string value that's in the cell. The rest is layout.
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*/
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struct tbl_dat {
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struct tbl_cell *layout; /* layout cell */
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struct tbl_dat *next;
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char *string; /* data (NULL if not TBL_DATA_DATA) */
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int spans; /* how many spans follow */
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int block; /* T{ text block T} */
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enum tbl_datt pos;
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};
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enum tbl_spant {
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TBL_SPAN_DATA, /* span consists of data */
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TBL_SPAN_HORIZ, /* span is horizontal line */
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TBL_SPAN_DHORIZ /* span is double horizontal line */
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};
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/*
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* A row of data in a table.
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*/
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struct tbl_span {
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struct tbl_opts *opts;
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struct tbl_row *layout; /* layout row */
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struct tbl_dat *first;
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struct tbl_dat *last;
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struct tbl_span *prev;
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struct tbl_span *next;
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int line; /* parse line */
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enum tbl_spant pos;
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};
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enum eqn_boxt {
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EQN_TEXT, /* text (number, variable, whatever) */
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EQN_SUBEXPR, /* nested `eqn' subexpression */
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EQN_LIST, /* list (braces, etc.) */
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EQN_PILE, /* vertical pile */
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EQN_MATRIX /* pile of piles */
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};
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enum eqn_fontt {
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EQNFONT_NONE = 0,
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EQNFONT_ROMAN,
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EQNFONT_BOLD,
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EQNFONT_FAT,
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EQNFONT_ITALIC,
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EQNFONT__MAX
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};
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enum eqn_post {
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EQNPOS_NONE = 0,
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EQNPOS_SUP,
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EQNPOS_SUBSUP,
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EQNPOS_SUB,
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EQNPOS_TO,
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EQNPOS_FROM,
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EQNPOS_FROMTO,
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EQNPOS_OVER,
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EQNPOS_SQRT,
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EQNPOS__MAX
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};
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enum eqn_pilet {
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EQNPILE_NONE = 0,
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EQNPILE_PILE,
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EQNPILE_CPILE,
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EQNPILE_RPILE,
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EQNPILE_LPILE,
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EQNPILE_COL,
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EQNPILE_CCOL,
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EQNPILE_RCOL,
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EQNPILE_LCOL,
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EQNPILE__MAX
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};
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/*
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* A "box" is a parsed mathematical expression as defined by the eqn.7
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* grammar.
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*/
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struct eqn_box {
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int size; /* font size of expression */
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#define EQN_DEFSIZE INT_MIN
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enum eqn_boxt type; /* type of node */
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struct eqn_box *first; /* first child node */
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struct eqn_box *last; /* last child node */
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struct eqn_box *next; /* node sibling */
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struct eqn_box *prev; /* node sibling */
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struct eqn_box *parent; /* node sibling */
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char *text; /* text (or NULL) */
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char *left; /* fence left-hand */
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char *right; /* fence right-hand */
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char *top; /* expression over-symbol */
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char *bottom; /* expression under-symbol */
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size_t args; /* arguments in parent */
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size_t expectargs; /* max arguments in parent */
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enum eqn_post pos; /* position of next box */
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enum eqn_fontt font; /* font of box */
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enum eqn_pilet pile; /* equation piling */
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};
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/*
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* Parse options.
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*/
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#define MPARSE_MDOC 1 /* assume -mdoc */
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#define MPARSE_MAN 2 /* assume -man */
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#define MPARSE_SO 4 /* honour .so requests */
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#define MPARSE_QUICK 8 /* abort the parse early */
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#define MPARSE_UTF8 16 /* accept UTF-8 input */
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#define MPARSE_LATIN1 32 /* accept ISO-LATIN-1 input */
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enum mandoc_os {
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MANDOC_OS_OTHER = 0,
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MANDOC_OS_NETBSD,
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MANDOC_OS_OPENBSD
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};
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enum mandoc_esc {
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ESCAPE_ERROR = 0, /* bail! unparsable escape */
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ESCAPE_IGNORE, /* escape to be ignored */
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ESCAPE_SPECIAL, /* a regular special character */
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ESCAPE_FONT, /* a generic font mode */
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ESCAPE_FONTBOLD, /* bold font mode */
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ESCAPE_FONTITALIC, /* italic font mode */
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ESCAPE_FONTBI, /* bold italic font mode */
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ESCAPE_FONTROMAN, /* roman font mode */
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ESCAPE_FONTPREV, /* previous font mode */
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ESCAPE_NUMBERED, /* a numbered glyph */
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ESCAPE_UNICODE, /* a unicode codepoint */
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ESCAPE_BREAK, /* break the output line */
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ESCAPE_NOSPACE, /* suppress space if the last on a line */
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ESCAPE_HORIZ, /* horizontal movement */
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ESCAPE_HLINE, /* horizontal line drawing */
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ESCAPE_SKIPCHAR, /* skip the next character */
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ESCAPE_OVERSTRIKE /* overstrike all chars in the argument */
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};
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typedef void (*mandocmsg)(enum mandocerr, enum mandoclevel,
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const char *, int, int, const char *);
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struct mparse;
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struct roff_man;
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enum mandoc_esc mandoc_escape(const char **, const char **, int *);
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void mchars_alloc(void);
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void mchars_free(void);
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int mchars_num2char(const char *, size_t);
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const char *mchars_uc2str(int);
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int mchars_num2uc(const char *, size_t);
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int mchars_spec2cp(const char *, size_t);
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const char *mchars_spec2str(const char *, size_t, size_t *);
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struct mparse *mparse_alloc(int, enum mandocerr, mandocmsg,
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enum mandoc_os, const char *);
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void mparse_free(struct mparse *);
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void mparse_keep(struct mparse *);
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int mparse_open(struct mparse *, const char *);
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enum mandoclevel mparse_readfd(struct mparse *, int, const char *);
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enum mandoclevel mparse_readmem(struct mparse *, void *, size_t,
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const char *);
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void mparse_reset(struct mparse *);
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void mparse_result(struct mparse *,
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struct roff_man **, char **);
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const char *mparse_getkeep(const struct mparse *);
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const char *mparse_strerror(enum mandocerr);
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const char *mparse_strlevel(enum mandoclevel);
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void mparse_updaterc(struct mparse *, enum mandoclevel *);
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