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* Introduce the concept of nodes that are semantically transparent:Ingo Schwarze2020-02-271-37/+48
| | | | | | | | | | | | | | they are skipped when looking for previous or following high-level macros. Examples include roff(7) .ft, .ll, and .ta, mdoc(7) .Sm and .Tg, and man(7) .DT and .PD. Use this concept for a variety of improved decisions in various validators and formatters. While here, * remove a few const qualifiers on struct arguments that caused trouble; * get rid of some more Yoda notation in the vicinity; * and apply some other stylistic improvements in the vicinity. I found this class of issues while considering .Tg patches from kn@.
* bugfix: indented paragraph macros need a space characterIngo Schwarze2020-02-201-3/+3
| | | | before the width argument
* bugfix: .Tg must be ignored completely in these output modesIngo Schwarze2020-02-201-1/+1
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* Introduce a new mdoc(7) macro .Tg ("tag") to explicitly mark a placeIngo Schwarze2020-01-191-0/+1
| | | | | | | | | | | | | | | as defining a term. Please only use it when automatic tagging does not work. Manual page authors will not be required to add the new macro; using it remains optional. HTML output is still rudimentary in this version and will be polished later. Thanks to kn@ for reminding me that i have been considering since BSDCan 2014 whether something like this might be useful. Given that possibilities of making automatic tagging better are running out and there are still several situations where automatic tagging cannot do the job, i think the time is now ripe. Feedback and no objection from millert@; OK espie@ inoguchi@ kn@.
* Oops, i forgot to adjust this file to the changes in roff.h rev. 1.67.Ingo Schwarze2019-01-041-9/+32
| | | | | | Provide a handler for the new .nf and .fi roff(7) request nodes, avoiding a potential crash, and correctly restore the former fill more at .Ed even when there was .nf or .fi inside the block.
* Cleanup, no functional change:Ingo Schwarze2018-12-301-5/+4
| | | | | | | | | | | | | | The struct roff_man used to be a bad mixture of internal parser state and public parsing results. Move the public results to the parsing result struct roff_meta, which is already public. Move the rest of struct roff_man to the parser-internal header roff_int.h. Since the validators need access to the parser state, call them from the top level parser during mparse_result() rather than from the main programs, also reducing code duplication. This keeps parser internal state out of thee main programs (five in mandoc portable) and out of eight formatters.
* Several improvements to escape sequence handling.Ingo Schwarze2018-12-151-0/+1
| | | | | | | | | | | | | | | | | | | | | | | * 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.
* In the validators, translate obsolete macro aliases (Lp, Ot, LP, P)Ingo Schwarze2018-12-031-2/+9
| | | | | | to the standard forms (Pp, Ft, PP) up front, such that later code does not need to look for the obsolete versions. This reduces the risk of incomplete handling.
* The upcoming .while request will have to re-execute roff(7) linesIngo Schwarze2018-08-231-13/+0
| | | | | | | parsed earlier, so they will have to be saved for reuse - but the read.c preparser does not know yet whether a line contains a .while request before passing it to the roff parser. To cope with that, save all parsed lines for now. Even shortens the code by 20 lines.
* Remove more pointer arithmetic passing via regions outside the arrayIngo Schwarze2018-08-171-14/+20
| | | | | that is undefined according to the C standard. Robert Elz <kre at munnari dot oz dot au> pointed out i wasn't quite done yet.
* preserve comments before .Dd when converting mdoc(7) to man(7)Ingo Schwarze2018-04-111-2/+10
| | | | with mandoc -Tman; suggested by Thomas Klausner <wiz at NetBSD>
* Do not use a non-portable .R man(7) macro. Neither groff nor theIngo Schwarze2018-04-051-1/+1
| | | | | | heirloom-doctools support it. Work around the gap by using .BR with an empty first argument. This was noticed more than once in the past, but i always forgot to fix it.
* For .Do/.Dq, use the documented and portable \(lq and \(rqIngo Schwarze2018-04-051-2/+2
| | | | | | | | | character escape sequences rather than the undocumented and non-portable \(Lq and \(Rq. Bug reported by Tim L <darkxst at github> via Thomas Klausner <wiz at NetBSD>; see https://github.com/nih-at/libzip/pull/42
* Remove the implicit display feature of .Lk because it was inconsistentIngo Schwarze2018-01-131-9/+0
| | | | | | | | | across output devices, counter-intuitive, and resulted in ugly output for many real-world manual pages. Always format even long links in-line. I already committed a similar change to groff. OK jmc@, bentley@, and the original author of the feature, Werner Lemberg <wl@gnu.org>.
* Naive implementation of the roff(7) .po (page offset) request.Ingo Schwarze2017-06-141-0/+1
| | | | | | 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 :).
* implement roff(7) .rj (right justify) requestIngo Schwarze2017-06-141-8/+9
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* do not break the line between Bsx/Bx/Fx/Nx/Ox/Dx and its argumentsIngo Schwarze2017-06-101-9/+18
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* make the internal a2roffsu() interface more powerful by returningIngo Schwarze2017-06-081-8/+14
| | | | | a pointer to the end of the parsed data, making it easier to parse subsequent bytes
* Minimal implementation of the roff(7) .ce request (center a numberIngo Schwarze2017-06-061-0/+4
| | | | | 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 Schwarze2017-06-041-0/+1
| | | | | | 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.
* fix formatting of intermediate punctuation in .LkIngo Schwarze2017-05-301-6/+12
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* Basic implementation of the roff(7) .ti (temporary indent) request.Ingo Schwarze2017-05-081-4/+8
| | | | 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 Schwarze2017-05-051-14/+8
| | | | now that this actually saves code: -70 LOC.
* move .ll to the roff modulesIngo Schwarze2017-05-051-25/+23
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* Move handling of the roff(7) .ft request from the man(7)Ingo Schwarze2017-05-051-4/+17
| | | | | modules to the new roff(7) modules. As a side effect, mdoc(7) now handles .ft, too. Of course, do not use that.
* Parser reorg:Ingo Schwarze2017-05-041-1/+10
| | | | | Generate the first node on the roff level: .br Fix some column numbers in diagnostic messages while here.
* Continue parser unification:Ingo Schwarze2017-04-241-3/+3
| | | | | | | | * Make enum rofft an internal interface as enum roff_tok in "roff.h". * Represent mdoc and man macros in enum roff_tok. * Make TOKEN_NONE a proper enum value and use it throughout. * Put the prologue macros first in the macro tables. * Unify mdoc_macroname[] and man_macroname[] into roff_name[].
* implement display of long .Lk URIs to match -TasciiIngo Schwarze2017-04-171-4/+57
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* Fix handling of trailing punctuation in .Lk.Ingo Schwarze2017-04-171-3/+11
| | | | | | | | | This macro is unusual in so far as trailing punction needs to remain inside the scope because it must be inside, not after the display of long URIs in terminal output mode. Improves formatting of fw_update(1), help(1), less(1), sendbug(1), acx(4), inet6(4), ipsec(4), oce(4), isakmpd.conf(5), afterboot(8), release(8), traceroute(8).
* Do not make the colon after the .Lk link text italic.Ingo Schwarze2017-04-141-1/+1
| | | | I just pushed the same change to GNU troff.
* Remove a redundant condition in .%T handling, no functional change.Ingo Schwarze2017-03-041-4/+2
| | | | Found by jsg@ with scan-build.
* Use typographic quotes rather than '"' for .Rs %T (no change for -TasciiIngo Schwarze2017-02-171-4/+2
| | | | | output, of course). Patch from bentley@ in November 2014. This can be committed now because groff merged Anthony's patch yesterday.
* Remove the ENDBODY_NOSPACE flag, simplifying the code.Ingo Schwarze2017-02-161-3/+0
| | | | | | | | Comparing to groff output, it appears that all cases where it was used and made a difference actually require the opposite, ENDBODY_SPACE. I have no idea why i added it back in 2010; maybe to compensate for some other bug that has long been fixed.
* The .Nm macro does not only use the default name when it has noIngo Schwarze2017-02-061-4/+2
| | | | | | | | | | argument, but also when the first argument is a child macro. Arcane issue found in the FreeBSD cxgbetool(8) manual that Baptiste Daroussin <bapt at FreeBSD> sent me long ago for a different reason. While solving this, switch to the new technique of doing text production in the validator, reducing code duplication in the formatters, which also makes -Ttree output clearer.
* Do text production for .Bt, .Ex, .Rv, .Ud at the validation stageIngo Schwarze2017-01-111-100/+10
| | | | | | | | | rather than in the formatters. Use NODE_NOSRC flag for .Lb and NODE_NOSRC and NODE_NOPRT for .St. Results in a more rigorous syntax tree and in 135 lines less code. This work was triggered by a question from Abhinav Upadhyay <er dot abhinav dot upadhyay at gmail dot com> (NetBSD) on discuss@.
* Use new NODE_NOSRC and NODE_NOPRT flags for .Bx and .At.Ingo Schwarze2017-01-101-22/+1
| | | | More rigorous AST and 40 lines less code.
* For the .Ux/.Ox family of macros, do text production at the validationIngo Schwarze2017-01-101-6/+6
| | | | | stage rather than in each and every individual formatter, using the new NODE_NOSRC flag. More rigorous and also ten lines less code.
* unify names of AST node flags; no change of cpp outputIngo Schwarze2017-01-101-17/+17
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* Introduce flags NODE_NOSRC and NODE_NOPRT for AST nodes.Ingo Schwarze2017-01-101-1/+4
| | | | | | | | | Use them to mark generated nodes and nodes that shall not produce output. Let -Ttree output mode display these new flags. Use NODE_NOSRC for .Ar, .Mt, and .Pa default arguments. Use NODE_NOPRT for .Dd, .Dt, and .Os. These will help to make handling of text production macros more rigorous.
* Delete the redundant "nchild" member of struct roff_node, replacingIngo Schwarze2016-01-081-25/+24
| | | | | | | | most uses by one, a few by two pointer checks, and only one by a tiny loop - not only making data smaller, but code shorter as well. This gets rid of an implicit invariant that confused both static analysis tools and human auditors. No functional change.
* To make the code more readable, delete 283 /* FALLTHROUGH */ commentsIngo Schwarze2015-10-121-14/+0
| | | | | | that were right between two adjacent case statement. Keep only those 24 where the first case actually executes some code before falling through to the next case.
* modernize style: "return" is not a functionIngo Schwarze2015-10-061-71/+71
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* Delete the wrapper functions mdoc_meta(), man_meta(), mdoc_node(),Ingo Schwarze2015-04-181-11/+5
| | | | | | man_node() from the mandoc(3) semi-public interface and the internal wrapper functions print_mdoc() and print_man() from the HTML formatters. Minus 60 lines of code, no functional change.
* Replace the structs mdoc and man by a unified struct roff_man.Ingo Schwarze2015-04-181-2/+2
| | | | | Almost completely mechanical, no functional change. Written on the train from Exeter to London returning from p2k15.
* Third step towards parser unification:Ingo Schwarze2015-04-021-2/+2
| | | | | Replace struct mdoc_meta and struct man_meta by a unified struct roff_meta. Written of the train from London to Exeter on the way to p2k15.
* Second step towards parser unification:Ingo Schwarze2015-04-021-10/+10
| | | | | | | | | Replace struct mdoc_node and struct man_node by a unified struct roff_node. To be able to use the tok member for both mdoc(7) and man(7) without defining all the macros in roff.h, sacrifice a tiny bit of type safety and make tok an int rather than an enum. Almost mechanical, no functional change. Written on the Eurostar from Bruxelles to London on the way to p2k15.
* First step towards parser unification:Ingo Schwarze2015-04-021-33/+34
| | | | | | Replace enum mdoc_type and enum man_type by a unified enum roff_type. Almost mechanical, no functional change. Written on the ICE train from Frankfurt to Bruxelles on the way to p2k15.
* Render \(lq and \(rq as '"' in -Tascii mode but leave the renderingIngo Schwarze2015-02-171-2/+2
| | | | | | of .Do/.Dc, .Dq, .Lb, and .St untouched. Reduces groff-mandoc differences in OpenBSD base by about 7%. Reminded of the issue by naddy@.
* Delete the mdoc_node.pending pointer and the function calculatingIngo Schwarze2015-02-121-7/+10
| | | | | | | | | | | | | | | | | | | | | | | it, make_pending(), which was the most difficult function of the whole mdoc(7) parser. After almost five years of maintaining this hellhole, i just noticed the pointer isn't needed after all. Blocks are always rewound in the reverse order they were opened; that even holds for broken blocks. Consequently, it is sufficient to just mark broken blogs with the flag MDOC_BROKEN and breaking blocks with the flag MDOC_ENDED. When rewinding, instead of iterating the pending pointers, just iterate from each broken block to its parents, rewinding all that are MDOC_ENDED and stopping after processing the first ancestor that it not MDOC_BROKEN. For ENDBODY markers, use the mdoc_node.body pointer in place of the former mdoc_node.pending. This also fixes an assertion failure found by jsg@ with afl, test case #467 (Bo Bl It Bd Bc It), where (surprise surprise) the pending pointer got corrupted. Improved functionality, minus one function, minus one struct field, minus 50 lines of code.
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