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* merge a test update from OpenBSD that was forgotten in AprilIngo Schwarze2018-12-212-1/+11
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* Rename mandoc_getarg() to roff_getarg() and pass it the roff parserIngo Schwarze2018-12-2129-31/+365
| | | | | | | | | | | | | | | | | | struct as an argument such that after copy-in, it can call roff_expand() once again, which used to be called roff_res() before this. This fixes a subtle low-level roff(7) parsing bug reported by Fabio Scotoni <fabio at esse dot ch> in the 4.4BSD-Lite2 mdoc.samples(7) manual page, because that page used an escaped escape sequence in a macro argument. To expand escaped escape sequences in quoted mdoc(7) arguments, too, stop bypassing the call to roff_getarg() in mdoc_argv.c, function args() for this case. This does not solve the case of escaped escape sequences in quoted .Bl -column phrases yet. Because roff_expand() can make the string longer, roff_getarg() can no longer operate in-place but needs to malloc(3) the returned string. In the high-level parsers, free(3) that string after processing it.
* Bugfix:Ingo Schwarze2018-12-203-3/+8
| | | | | | | When after a \\, \t, or \a, another \t or \a had to be resolved in copy mode within the same argument, the argument got corrupted. Found while working on a loosely related bug report from Fabio Scotoni <fabio at esse dot ch>.
* Yet another round of improvements to manual font selection.Ingo Schwarze2018-12-1610-34/+79
| | | | | | | | | 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.
* Several improvements to escape sequence handling.Ingo Schwarze2018-12-1527-58/+303
| | | | | | | | | | | | | | | | | | | | | | | * 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.
* Clean up the validation of .Pp, .PP, .sp, and .br. Make sure allIngo Schwarze2018-12-048-4/+19
| | | | | | | | | | | | | | combinations are handled, and are handled in a systematic manner. This resolves some erratic duplicate handling, handles a number of missing cases, and improves diagnostics in various respects. Move validation of .br and .sp to the roff validation module rather than doing that twice in the mdoc and man validation modules. Move the node relinking function to the roff library where it belongs. In validation functions, only look at the node itself, at previous nodes, and at descendants, not at following nodes or ancestors, such that only nodes are inspected which are already validated.
* In the validators, translate obsolete macro aliases (Lp, Ot, LP, P)Ingo Schwarze2018-12-031-2/+2
| | | | | | 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.
* When a conditional block is closed by putting "\}" on a text lineIngo Schwarze2018-11-263-4/+30
| | | | | | | | | | | | | by itself (which is somewhat unusual but not invalid; most authors use the empty macro line ".\}" instead), agree more closely with groff and do not produce a double space in the output. Quirk reported by millert@. While here, tweak the rest of the function body of roff_cond_text() to more closely match roff_cond_sub(). The subtly different handling could make people (including myself) wonder whether there is any point in being different. Testing shows there is not.
* Render the eqn(7) "sqrt" function as U+221A in UTF-8 output.Ingo Schwarze2018-10-022-4/+4
| | | | | | This also agrees with what groff does. Suggested by an attendee of EuroBSDCon 2018 in Bucuresti. Written on the plane Bucuresti-Frankfurt returning from EuroBSDCon.
* Rudimentary implementation of the roff(7) .char (output glyphIngo Schwarze2018-08-257-2/+61
| | | | | | | | | definition) request, used for example by groff_hdtbl(7). This simplistic implementation may interact incorrectly with the .tr (input character translation) request. But come on, you are not only using .char *and* .tr, but you do so with respect to the same character in the same manual page?
* If man(7) next-line scope is open and the line ends with \c,Ingo Schwarze2018-08-252-3/+29
| | | | the scope remains open. Needed for example for groff_man(7).
* Rudimentary implementation of the roff(7) .while request.Ingo Schwarze2018-08-2416-2/+182
| | | | | | | | | | | Needed for example by groff_hdtbl(7). There are two limitations: It does not support nested .while requests yet, and each .while loop must start and end in the same scope. The roff_parseln() return codes are now more flexible and allow OR'ing options.
* Implement the roff(7) .shift and .return requests,Ingo Schwarze2018-08-2314-8/+184
| | | | | | | | | | | | | | for example used by groff_hdtbl(7) and groff_mom(7). Also correctly interpolate arguments during nested macro execution even after .shift and .return, implemented using a stack of argument arrays. Note that only read.c, but not roff.c can detect the end of a macro execution, and the existence of .shift implies that arguments cannot be interpolated up front, so unfortunately, this includes a partial revert of roff.c rev. 1.337, moving argument interpolation back into the function roff_res().
* Improve the ASCII rendering of \(Po (Pound Sterling)Ingo Schwarze2018-08-2116-90/+86
| | | | | and of the playing card suits to match groff, using feedback from Ralph Corderoy <ralph at inputplus dot co dot uk>.
* Fix some issues found looking at groff_char(7):Ingo Schwarze2018-08-218-12/+12
| | | | | | * Add two missing characters, \('Y and \('y. * The Weierstrass p is not capital, see http://unicode.org/notes/tn27/. * Add a groff-compatible ASCII transliteration for U+02DC: "~".
* Disable one test for now that is broken after the addition of \).Ingo Schwarze2018-08-192-4/+3
| | | | | | | | It is not broken because of \), which is correctly implemented, but the addition merely reveals a hidden bug elsewhere, almost certainly in \\ handling. Given that \\ is among the most mysterious escape sequences and using it is very strongly discouraged in manual pages, fixing that is not urgent - and may be hard.
* Implement the \*(.T predefined string (interpolate device name)Ingo Schwarze2018-08-166-1/+90
| | | | | by allowing the preprocessor to pass it through to the formatters. Used for example by the groff_char(7) manual page.
* support tail arguments on the .ME and .UE macros,Ingo Schwarze2018-08-146-16/+33
| | | | used for example in the ditroff(7) manual of the groff package
* Two new low-level roff(7) features:Ingo Schwarze2018-04-103-1/+50
| | | | | | * .nr optional third argument (auto-increment step size) * \n+ and \n- numerical register auto-increment and -decrement bentley@ reported on Dec 9, 2013 that lang/sbcl(1) uses these.
* When accessing an undefined number register, define it to be zero, likeIngo Schwarze2018-04-093-1/+46
| | | | | | the previous commit for strings and macros, only technically simpler. Desired behaviour also mentioned by Werner Lemberg in 2011. This diff adds functionality but is -21 +19 LOC. :-)
* Using an undefined string or macro will cause it to be defined as empty.Ingo Schwarze2018-04-094-2/+110
| | | | | Observed by Werner Lemberg on Nov 14, 2011 and rotting on my TODO list ever since.
* fix wrong dateIngo Schwarze2018-02-072-2/+2
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* Delete the "no blank before trailing delimiter" check from theIngo Schwarze2018-02-069-15/+0
| | | | | partial explicit macros. Leah Neukirchen <leah at vuxu dot org> rightfully points out that the check makes no sense for these macros.
* Remove the implicit display feature of .Lk because it was inconsistentIngo Schwarze2018-01-131-3/+2
| | | | | | | | | 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>.
* eliminate white space after opening and before closing punctuationIngo Schwarze2017-08-233-4/+4
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* Suppress spacing before certain kinds of lists.Ingo Schwarze2017-08-231-1/+1
| | | | | | | One benefit is a reduced probablity that a blank appears between a function name and the opening parenthesis introducing the arguments. The heuristics isn't perfect and may occasionally suppress a blank that wouldn't do harm.
* Improve ASCII rendering of a few rare character escape sequencesIngo Schwarze2017-08-232-6/+6
| | | | | that can be changed unilaterally because groff fails to render them at all.
* catch up with ASCII renderings in chars.c rev. 1.72Ingo Schwarze2017-08-2321-113/+118
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* disable .Xr -Tlint test for now,Ingo Schwarze2017-07-281-0/+3
| | | | it causes too much trouble on non-OpenBSD systems
* Do not test .Xr here. It is not what this directory should focus on,Ingo Schwarze2017-07-286-28/+20
| | | | and it is causing too much trouble in -portable.
* Avoid cross reference to mandoc(1) because it may cause a messageIngo Schwarze2017-07-206-12/+12
| | | | | on other operating systems where mandoc is not installed, causing the test to fail in the portable test suite.
* Run the regression tests iteratively rather than recursively.Ingo Schwarze2017-07-182-232/+236
| | | | | | | Simpler user interface, better summary output, simpler code, and slightly faster. Inspired by espie@'s request to avoid needless recursive make(1) in the OpenBSD regression testing tree.
* test -diag -width and -inset -widthIngo Schwarze2017-07-169-12/+20
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* print the right character for mathematical overbar; from bentley@Ingo Schwarze2017-07-154-4/+4
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* print HTML character references as 4+ digits hexadecimal, like Unicode;Ingo Schwarze2017-07-1411-331/+331
| | | | from bentley@, tweaked by me
* add parentheses to the output where required for disambiguationIngo Schwarze2017-07-079-10/+10
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* Now that we have the -Wstyle message level, downgrade six warningsIngo Schwarze2017-07-0617-68/+68
| | | | | | that are not syntax mistakes and that do not cause wrong formatting or content to style suggestions. Also upgrade two warnings that may cause information loss to errors.
* Fix operator precedence according to Brian W. Kernighan and LorindaIngo Schwarze2017-07-0620-25/+78
| | | | | L. Cherry, "Typesetting Mathematics - User's Guide (Second Edition)", August 15, 1978, paragraph 23; swarm of bugs pointed out by bentley@.
* Fix handling of \} on roff request lines.Ingo Schwarze2017-07-042-3/+12
| | | | Cures bogus error messages in pages generated with pod2man(1).
* It turns out association of tbl spans with layout rows is simpler thanIngo Schwarze2017-07-044-3/+48
| | | | i thought. Fixing a bug in curs_addch(3) and minus 25 lines of code.
* Messages of the -Wbase level now print STYLE:. Since thisIngo Schwarze2017-07-041244-2724/+2681
| | | | | | | | causes horrible churn anyway, profit of the opportunity to stop excessive testing, such that this is hopefully the last instance of such churn. Consistently use OpenBSD RCS tags, blank .Os, blank fourth .TH argument, and Mdocdate like everywhere else. Use -Ios=OpenBSD for platform-independent predictable output.
* warn about some non-portable idioms in .Bl -column;Ingo Schwarze2017-06-297-8/+74
| | | | triggered by a question from Yuri Pankov (illumos)
* test inter-column spacingIngo Schwarze2017-06-273-1/+33
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* warn about .Ns macros that have no effect because they are followedIngo Schwarze2017-06-274-4/+21
| | | | by an isolated closing delimiter; inspired by mdoclint
* catch up with the recent eqn(7) improvementsIngo Schwarze2017-06-2642-37/+229
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* test new MT macroIngo Schwarze2017-06-258-1/+100
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* cope with changes in BASE messagesIngo Schwarze2017-06-2516-18/+20
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* cope with changes in BASE messagesIngo Schwarze2017-06-2589-169/+253
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* cope with changes in BASE messagesIngo Schwarze2017-06-25110-183/+258
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* Implement appending to standard man(7) and mdoc(7) macros with .am.Ingo Schwarze2017-06-1812-6/+100
| | | | | | | | | | | | | | | | | | With roff_getstrn(), provide finer control which definitions can be used for what: * All definitions can be used for .if d tests and .am appending. * User-defined for \* expansion, .dei expansion, and macro calling. * Predefined for \* expansion. * Standard macros, original or renamed, for macro calling. Several related improvements while here: * Do not return string table entries that have explicitly been removed. * Do not create a rentab entry when trying to rename a non-existent macro. * Clear an existing rentab entry when the external interface roff_setstr() is called with its name. * Avoid trailing blanks in macro lines generated from renamed and from aliased macros. * Delete the duplicate __m*_reserved[] tables, just use roff_name[].
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