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* Fix two issues with .po (page offset) formatting:Ingo Schwarze2020-09-031-5/+13
| | | | | | | | | | | | 1. Truncate excessive offsets to a width reasonable in the context of manual pages instead of printing excessively long lines and sometimes causing assertion failures; found in an afl run performed by Jan Schreiber <jes at posteo dot de>. 2. Remember both the requested and the applied page offset; otherwise, subtracting an excessive width, then adding it again, would end up with an incorrectly large offset. While here, simplify the code by reverting the previous offset up front, and also add some comments to make the general ideas easier to understand.
* If .ti had an excessive argument, using it was attempted, in someIngo Schwarze2020-09-031-11/+21
| | | | | | | | cases resulting in an assertion failure. Instead, truncate the temporary indent to a width reasonable in a manual page. I found the issue in an afl run that was performed by Jan Schreiber <jes at posteo dot de>.
* Because mandoc_aux.h and mandoc.h use __attribute__, all files thatIngo Schwarze2020-06-221-1/+3
| | | | | | | | include mandoc_aux.h or mandoc.h need to include config.h, too. It is suspected that for example IRIX needs this, or it is likely to throw errors in these files because the system compiler doesn't understand __attribute__. Issue reported by Kazuo Kuroi <kazuo at irixnet dot org>.
* Simplify the roff(7) .ce and .rj terminal formatter by using theIngo Schwarze2019-01-041-14/+3
| | | | new TERMP_CENTER and TERMP_RIGHT flags. No functional change.
* Move parsing of the .nf and .fi (fill mode) requests from the man(7)Ingo Schwarze2018-12-311-0/+4
| | | | | | parser to the roff(7) parser. As a side effect, .nf and .fi are now also parsed in mdoc(7) input, though the mdoc(7) formatters still ignore most of their effect.
* Yet another round of improvements to manual font selection.Ingo Schwarze2018-12-161-13/+11
| | | | | | | | | Unify handling of \f and .ft. Support \f4 (bold+italic). Support ".ft BI" and ".ft CW" for terminal output. Support the .ft request in HTML output. Reject the bogus fonts \f(C1, \f(C2, \f(C3, and \f(CP. In regress.pl, only strip leading whitespace in math mode.
* Major cleanup; may imply minor changes in edge cases of error reporting.Ingo Schwarze2018-12-141-1/+1
| | | | | | | | | | | Finally, drop support for the run-time configurable mandocmsg() callback. It was over-engineered from the start, never used for anything in a decade, and repeatedly caused maintenance headaches. Consolidate reporting infrastructure into two files, mandoc.h and mandoc_msg.c, mopping up the bits and pieces that were scattered around main.c, read.c, mandoc_parse.h, libmandoc.h, the prototypes of four parsing-related functions, and both parser structs.
* The groff man-ext macros define fonts CB, CI, and CR,Ingo Schwarze2018-08-101-2/+7
| | | | | and some groff manual pages actually use them in .ft requests. It's easy enough to handle these .ft requests in mandoc, too.
* Split -Wstyle into -Wstyle and the even lower -Wbase, and addIngo Schwarze2017-06-241-0/+1
| | | | | | | | | | | | | | | -Wopenbsd and -Wnetbsd to check conventions for the base system of a specific operating system. Mark operating system specific messages with "(OpenBSD)" at the end. Please use just "-Tlint" to check base system manuals (defaulting to -Wall, which is now -Wbase), but prefer "-Tlint -Wstyle" for the manuals of portable software projects you maintain that are not part of OpenBSD base, to avoid bogus recommendations about base system conventions that do not apply. Issue originally reported by semarie@, solution using an idea from tedu@, discussed with jmc@ and jca@.
* Naive implementation of the roff(7) .po (page offset) request.Ingo Schwarze2017-06-141-0/+24
| | | | | | This clearly works when .po is called on the top level, but might not be sophisticated enough if people call .po inside indentation-changing contexts, but i haven't seen that in manual pages (yet :).
* improve rounding rules for scaling unitsIngo Schwarze2017-06-141-1/+1
| | | | in horizontal orientation in the terminal formatter
* implement roff(7) .rj (right justify) requestIngo Schwarze2017-06-141-14/+16
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* make the internal a2roffsu() interface more powerful by returningIngo Schwarze2017-06-081-2/+2
| | | | | a pointer to the end of the parsed data, making it easier to parse subsequent bytes
* Prepare the terminal driver for filling multiple columns in parallel,Ingo Schwarze2017-06-071-14/+14
| | | | | | first step: split column data out of the terminal state struct into a new column state struct and use an array of such column state structs. No functional change.
* Minimal implementation of the roff(7) .ce request (center a numberIngo Schwarze2017-06-061-0/+39
| | | | | of input lines without filling). Contrary to groff, high-level macros abort .ce mode for now.
* Implement the roff(7) .mc (right margin character) request.Ingo Schwarze2017-06-041-2/+19
| | | | | | The Tcl/Tk manual pages use this extensively. Delete the TERM_MAXMARGIN hack, it breaks .mc inside .nf; instead, implement a proper TERMP_BRNEVER flag.
* Basic implementation of the roff(7) .ti (temporary indent) request.Ingo Schwarze2017-05-081-0/+42
| | | | Needed by about four dozen ports (thanks to naddy@ for the research).
* Basic implementation of the roff(7) .ta (define tab stops) request.Ingo Schwarze2017-05-071-1/+11
| | | | | | This is the first feature made possible by the parser reorganization. Improves the formatting of the SYNOPSIS in many Xenocara GL manuals. Also important for ports, as reported by many, including naddy@.
* Move .sp to the roff modules. Enough infrastructure is in placeIngo Schwarze2017-05-051-1/+25
| | | | now that this actually saves code: -70 LOC.
* move .ll to the roff modulesIngo Schwarze2017-05-051-1/+10
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* Move handling of the roff(7) .ft request from the man(7)Ingo Schwarze2017-05-051-1/+29
| | | | | modules to the new roff(7) modules. As a side effect, mdoc(7) now handles .ft, too. Of course, do not use that.
* Start roff formatter modules for HTML and termininal output,Ingo Schwarze2017-05-041-0/+52
used by both the mdoc and man formatters, with the ultimate goal of reducing code duplication between the two macro formatters. Made possible by the parser unification. Add the first formatting function (for the .br request).