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* Do not write duplicate id= attributes, they violate HTML syntax.Ingo Schwarze2018-05-251-4/+44
| | | | | Append suffixes for disambiguation. Issue first reported by Jakub Klinkovsky <j dot l dot k at gmx dot com> (Arch Linux).
* Use <span> for .Ms rather than <b>; discussed with John Gardner.Ingo Schwarze2018-05-211-0/+2
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* Use <span> for .Ad rather than <i>; also suggested by John Gardner.Ingo Schwarze2018-05-211-1/+1
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* Use <span> rather than abusing <i> for .Pa;Ingo Schwarze2018-05-211-0/+2
| | | | suggested by John Gardner <gardnerjohng at gmail dot com>.
* Fix a long-standing issue:Ingo Schwarze2018-05-091-0/+3
| | | | | | | | | Some macros (Nd, Oo) can contain blocks but rendered as elements that can only contain phrasing content, resulting in invalid HTML nesting. Switch them to <div>. Also move the related "display: inline" style from the HTML to the CSS. Reminded during a conversation with John Gardner.
* Eliminate the class=It-* attributes.Ingo Schwarze2018-05-081-0/+4
| | | | | Cleaner HTML, more idiomatic CSS, and minus 30 lines of C code. Suggested by John Gardner <gardnerjohng at gmail dot com>.
* Switch the emitted HTML element from <b> to <code> for the fixedIngo Schwarze2018-05-081-0/+6
| | | | | | | | syntax element macros .Nm, .Fl, .Cm, .Ic, .In, .Fd, .Fn, and .Cd. Adjust both the internal and external style sheets such that rendering remains unchanged in typical browsers. Based on feedback from John Gardner <gardnerjohng at gmail dot com>.
* skip printing the embedded style sheet if an external style is referencedIngo Schwarze2018-05-011-5/+6
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* preserve comments before .Dd and .TH (typically Copyright and license)Ingo Schwarze2018-04-131-1/+27
| | | | | in full HTML output, but not with -Ofragment, e.g. in man.cgi(8); suggested by Thomas Klausner <wiz at NetBSD>
* fix a NULL pointer access on deroff() failure;Ingo Schwarze2017-09-061-0/+2
| | | | | could be triggered with '.SS ""'; reported by Michael <Stapelberg at debian>
* In .Bl -tag and -hang, do not print a margin-left style attributeIngo Schwarze2017-07-151-13/+17
| | | | | | for each individual item if the -width argument matches the default of 6n. Suggested by Steffen Nurpmeso <steffen at sdaoden dot eu> on <groff at GNU dot org> in April 2017.
* Fix an assertion failure triggered by print_otag("sw+-l", NULL).Ingo Schwarze2017-07-141-1/+6
| | | | | | Even though we skip the style when the argument is NULL, we must still consume the options. Not found with afl(1), but during manual testing of the previous patch...
* Handle .Bl -compact via CSS rather than writing individual styleIngo Schwarze2017-07-141-11/+0
| | | | | | | | attributes into .It blocks; suggested by Steffen Nurpmeso <steffen at sdaoden dot eu> on <groff at GNU dot org> in April 2017. Delete margin-bottom and margin-top style names and the 'v' argument letter from print_otag() because they are no longer used.
* print HTML character references as 4+ digits hexadecimal, like Unicode;Ingo Schwarze2017-07-141-3/+3
| | | | from bentley@, tweaked by me
* Write text boxes as <mi>, <mn>, or <mo> as appropriate,Ingo Schwarze2017-06-231-0/+1
| | | | | and write fontstyle or fontweight attributes where required. Missing features reported by bentley@.
* implement the roff(7) \p (break output line) escape sequenceIngo Schwarze2017-06-141-7/+26
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* make the internal a2roffsu() interface more powerful by returningIngo Schwarze2017-06-081-1/+4
| | | | | a pointer to the end of the parsed data, making it easier to parse subsequent bytes
* Tweak previous: tb@ noticed that some browser/font combinationsIngo Schwarze2017-05-141-1/+1
| | | | | | have so amazingly wide bold fonts (for the same nominal font size) that adding 15% to the column width still isn't sufficient to make text reliably fit, so go for 20%.
* Make the tag column in .Bl -tag lists wider:Ingo Schwarze2017-05-121-4/+10
| | | | | | 1. I forgot about the 2n padding between tag and body. 2. The factor 1.1 was too small for bold fold, make it *1.15 + 1n. Ugliness spotted by tb@.
* Minimal support for deep linking into man(7) pages.Ingo Schwarze2017-03-151-1/+24
| | | | | As the man(7) language does not provide semantic markup, only .SH, .SS, and .UR become anchors for now.
* Slightly increase widths calculated from string lengths (mainlyIngo Schwarze2017-03-141-0/+2
| | | | | | | | | | for .Bl -tag lists and SYNOPSIS .Nm blocks), such that the text still fits even if it is printed in bold font. This is an ugly band aid - but implementing font-dependent width measurements would be a major project and even more difficult for HTML than for PostScript. Issue reported by Jan Stary <hans at stare dot cz>.
* Print title="..." in addition to id="..." attributes for macro keysIngo Schwarze2017-03-131-5/+12
| | | | | that can be searched for by apropos(1), such that you see the semantic function in a tooltip when hovering with the mouse.
* mark up .Ar, .Fa, .Va, .Ft, and .Vt with <var> rather than <i>;Ingo Schwarze2017-02-051-0/+1
| | | | suggested by bentley@ long ago, but needed lots of cleanup first
* for .Rs, use <cite>Ingo Schwarze2017-02-051-0/+1
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* Improve <table> syntax:Ingo Schwarze2017-02-051-1/+1
| | | | | | | | The <col> element can only appear inside <colgroup>, so use <colgroup>. The <tbody> element is optional and useless, so don't use it. Even if we would ever need <thead> or <tfoot>, <tbody> would still be optional and useless; besides, we will likely never need <thead> or <tfoot>, simply because our languages don't support such functionality.
* eliminate one useless struct and one level of indirection;Ingo Schwarze2017-01-291-9/+9
| | | | no functional change
* Simplify usage of print_otag() even more:Ingo Schwarze2017-01-281-32/+50
| | | | accept NULL to skip the attribute or format.
* Fix -man -Thtml formatting after .nf (which has nothing to doIngo Schwarze2017-01-261-2/+1
| | | | | | | | | | | | | | | | with "literal", by the way, it means "no fill"): * Use <pre> such that whitespace is preserved. * Preserve lines breaks. * For font alternating macros, avoid node recursion which required scary juggling with the fill state. Instead, simply print the text children directly. Missing feature first noticed by kristaps@ in 2011, the again reported by afresh1@ in 2016, and finally reported here: https://github.com/Debian/debiman/issues/21 , which i only found because of Shane Kerr's comment here: https://plus.google.com/110314300533310775053/posts/H1eaw9Yskoc
* Improve HTML formatting of .Bl -tag.Ingo Schwarze2017-01-251-0/+3
| | | | | | | | | | | | | | | | | | | | | In particular, when using the style sheet, put the body on the same line as the head for short heads, or on the next line for long heads, in a way that preserves both correct indentation and correct vertical spacing with and without -compact, and with one or more heads per body (hi, Zaphod) - eight use cases so far - and with and without -tag, and with and without -offset, 32 use cases grand total. Using many ideas from zhuk@, from <David dot Dahlberg at fkie dot fraunhofer dot de>, and from Benny Lofgren <bl dash lists at lofgren dot biz>, and a few of my own. This is an excellent demonstration that CSS is an extremely hostile language, much more trapful and much harder to use than, say, C. When matthew@ reported this in July 2014 (!), it was already a known issue, and i no longer remember for how long. My first serious attempt at fixing it (in November 2015) failed miserably. I'd love to see simplifications of both the generated HTML code and of the style sheet, but without breaking any of the 32 use cases, please.
* slightly simplify header and footer stylesIngo Schwarze2017-01-211-4/+0
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* clean up markup of .Bd, .D1, .Dl, .Li, and .Ql;Ingo Schwarze2017-01-191-1/+0
| | | | in particular, stop abuse of <blockquote>
* Clean up CSS rules for sections and paragraphs.Ingo Schwarze2017-01-191-2/+2
| | | | Start using real macro names for CSS classes.
* Implement line breaking of the generated HTML code at space charactersIngo Schwarze2017-01-191-64/+170
| | | | | | | | | in filled text. This does not affect HTML semantics, but makes the HTML code even more humanly readable. While here, - collapse multiple consecutive space characters in filled text - and insert a blank between style entries.
* Make HTML output more human readable by overhauling line break logicIngo Schwarze2017-01-181-76/+143
| | | | | around tags and by introducing some simple indentation. No change of HTML semantics intended.
* Completely delete the buf field of struct html and all the buf*()Ingo Schwarze2017-01-171-154/+72
| | | | | | | | | interfaces. Such a static buffer was a bad idea in the first place, causing unfixable truncation that was only prevented by triggering an assertion failure. Instead, let the small number of remaining users allocate and free their own, temporary dynamic buffers, or for the case of .Xr and .In, pass the original data to be assembled in print_otag().
* Simplify the usage of print_otag() by making it accept a variableIngo Schwarze2017-01-171-49/+134
| | | | | | | | | | number of arguments. Delete struct htmlpair and all the PAIR_*() macros. Delete enum htmlattr, handle that in print_otag() instead. Minus 190 lines of code; no functional change except better ordering of attributes (class before style) in three cases.
* from Tiago Silva <tiagofilipesilva at icloud dot com> long agoIngo Schwarze2017-01-081-1/+1
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* Generate simpler in-page links: just replace spaces with underscores.Ingo Schwarze2016-01-041-3/+3
| | | | Patch from bentley@.
* Major character table cleanup:Ingo Schwarze2015-10-131-4/+2
| | | | | | | | | | | | | * Use ohash(3) rather than a hand-rolled hash table. * Make the character table static in the chars.c module: There is no need to pass a pointer around, we most certainly never want to use two different character tables concurrently. * No need to keep the characters in a separate file chars.in; that merely encourages downstream porters to mess with them. * Sort the characters to agree with the mandoc_chars(7) manual page. * Specify Unicode codepoints in hex, not decimal (that's the detail that originally triggered this patch). No functional change, minus 100 LOC, and i don't see a performance change.
* Fix an obvious bug found during the /* FALLTHROUGH */ cleanup:Ingo Schwarze2015-10-121-1/+1
| | | | ASCII_NBRSP has to be rendered as "&nbsp;", not "-".
* To make the code more readable, delete 283 /* FALLTHROUGH */ commentsIngo Schwarze2015-10-121-10/+1
| | | | | | 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 Schwarze2015-10-061-7/+7
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* /* NOTREACHED */ after abort() is silly, delete itIngo Schwarze2015-09-261-1/+0
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* Actually use the new man.conf(5) "output" directive.Ingo Schwarze2015-03-271-28/+9
| | | | Additional functionality, yet minus 45 lines of code.
* Rudimentary implementation of the roff(7) \o escape sequence (overstrike).Ingo Schwarze2015-01-211-1/+8
| | | | | | This is of some relevance because the pod2man(1) preamble abuses it for the icelandic letter Thorn, instead of simply using \(TP and \(Tp. Missing feature found by sthen@ in DateTime::Locale::is_IS(3p).
* resolve some code duplication; no functional changeIngo Schwarze2014-12-201-26/+18
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* Fix the implementation and documentation of \c (continue text input line).Ingo Schwarze2014-12-021-1/+2
| | | | | In particular, make it work in no-fill mode, too. Reminded by Carsten dot Kunze at arcor dot de (Heirloom roff).
* The header libmandoc.h is part of the internal parser interface,Ingo Schwarze2014-12-011-1/+0
| | | | | | but html.c is not part of the parser at all, so it cannot include that header, and actually, it doesn't need it. Found while auditing includes after Theo's recent *.h commit.
* In terminal output, unify handling of Unicode and numbered characterIngo Schwarze2014-10-291-3/+6
| | | | | | | | | | | escape sequences just like it was earlier implemented for -Thtml. Do not let control characters other than ASCII 9 (horizontal tab) propagate to the output, even though groff allows them; but that really doesn't look like a great idea. Let mchars_num2char() return int such that we can distinguish invalid \N syntax from \N'0'. This also reduces the danger of signed char issues popping up.
* Make the character table available to libroff so it can check theIngo Schwarze2014-10-281-21/+3
| | | | | | | | validity of character escape names and warn about unknown ones. This requires mchars_spec2cp() to report unknown names again. Fortunately, that doesn't require changing the calling code because according to groff, invalid character escapes should not produce output anyway, and now that we warn about them, that's fine.
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