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* Delete support for the style=text-indent attribute, which is no longer used.Ingo Schwarze2018-06-252-8/+1
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* For -man -Thtml, ignore author-specified .HP widths because theyIngo Schwarze2018-06-252-15/+9
| | | | harm responsive design; use @media-dependent defaults instead.
* Revert previous: style=height is still used by roff_html.c, and itIngo Schwarze2018-06-181-1/+4
| | | | | doesn't actually harm responsive design, so keep it for now. Bug reported in de.comp.os.unix.bsd via naddy@, thanks.
* delete support for the HTML style=height property, which is no longer usedIngo Schwarze2018-06-102-7/+0
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* In HTML output, for lists that have an -indent argument, just useIngo Schwarze2018-06-102-18/+11
| | | | | | | | | | | | | a uniform indentation in CSS adapted to the viewport width and ignore the value of the argument taken from mdoc(7). While author-specified widths somewhat work as a micro-optimization in terminal and typeset output, they are nothing but harmful in HTML style= attributes because they break responsive design, whereas using a reasonable default indent almost never results in ugly output. Admittedly, the author-specified width might occasionally look even better, but only slightly so, and only for some viewport sizes. Based on guidance provided by John Gardner.
* When formatting man(7) documents that do not contain .SH macrosIngo Schwarze2018-06-101-0/+12
| | | | | with -Tps or -Tpdf, do not squeeze the whole text beyond the right margin. Bug reported by Will Backman during BSDCan.
* Remove redundant value= attributes from option elements,Ingo Schwarze2018-05-291-7/+5
| | | | | | and use type=search rather than type=text for the input element because it tends to better support autocompletion. Both suggested by John Gardner <gardnerjohng at gmail dot com>.
* Delete support for the print_otag(sw) * and - modifiers,Ingo Schwarze2018-05-292-21/+2
| | | | which are no longer used because we write fewer style= attributes.
* Ignore author-specified -width arguments for -tag and -hang listsIngo Schwarze2018-05-291-6/+5
| | | | | | | | | | | | | | | in HTML output. For terminal and typeset output, such arguments kind of work to achieve presentational micro-optimization. But for HTML, they only do harm. Large increases usually look ugly. Large reductions are impossible since the default is not large in the first place. Small tweaks in either direction are not important; at least not important enough to justify making responsive design impossible. Triggered by John Gardner's suggestion to further reduce style= attributes in the HTML code, in particular those containing hard-coded lengths.
* John Gardner tells me that among frontend developers, gratuitous useIngo Schwarze2018-05-281-52/+55
| | | | | | | | | | of double selectors like "element.class" is considered poor style. When doing selection mainly by elements is not appropriate because most elements require several different styles, exclusively selecting by class is less cumbersome, more concise, and more flexible. So drop the elements from the selectors, except where they are required for disambiguation and except where they add clarity due to the presence of child selectors.
* URL-fragment strings can only contain certain characters.Ingo Schwarze2018-05-281-2/+8
| | | | | Fixing HTML syntax violations e.g. in pf.conf(5) and ifconfig(8) reported by Anton Lazarov <lists at wrant dot com>.
* Start with baby steps towards responsive design:Ingo Schwarze2018-05-261-0/+14
| | | | | Use a @media width query to select a set of default indentations. Suggested by John Gardner <gardnerjohng at gmail dot com>.
* Use em units rather than ex units for horizontal lengths.Ingo Schwarze2018-05-261-19/+19
| | | | | | John Gardner and others tell me it produces more predictable results and is generally considered better style. Also use 0em instead of 0ex, in general.
* Do not write duplicate id= attributes, they violate HTML syntax.Ingo Schwarze2018-05-255-31/+55
| | | | | 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 Schwarze2018-05-213-2/+5
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* Use <span> for .Ad rather than <i>; also suggested by John Gardner.Ingo Schwarze2018-05-213-3/+4
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* Use <span> rather than abusing <i> for .Pa;Ingo Schwarze2018-05-213-2/+5
| | | | suggested by John Gardner <gardnerjohng at gmail dot com>.
* various minor improvementsIngo Schwarze2018-05-201-2/+7
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* Protect against malicious manual pages containing .ll requests withIngo Schwarze2018-05-201-0/+6
| | | | | | | | | | | | | | excessive arguments: apply the same cutoff as for the -O width= command line argument. While here, also place some assertions at strategical places to prevent excessive indentations from being printed in case of bugs. In the past, we had more than one bug that caused mandoc to print effectively infinite output, filling up people's /tmp/ file system, which is not funny. We cannot prevent bugs from crashing the program, but we can at least make filling up the disk less likely. Triggered by a remark from sthen@ on source-changes@.
* In a nutshell, all mobile browsers are broken.Ingo Schwarze2018-05-181-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By default, no matter the physical screen size, they use a fixed viewport width of about 1000px, then scale down the rendered page to make that huge viewport fit on the physical screen. That results in poor rendering for bad websites which assume a large fixed-size viewport (typically requiring zooming in to be able to actually read any text), but in atrocious rendering for good websites that make no assumption about the screen size (unreadably small text in the top left corner, most of the screen empty). A standard way to disable that insane behaviour and just render normally on the actual physical screen size does not exist. The closest thing is the CSS3 Device Adaptation Module Level 1 https://drafts.csswg.org/css-device-adapt/ but https://caniuse.com/#feat=css-deviceadaptation tells me that basically no browser implements it, not even on mobile. The next closest thing is the HTML meta viewport element - even though the problem has nothing to do with HTML and is purely a CSS issue. Standardization is not even planned for that one: * HTML 5.2 mentions it in passing without specifying it: https://www.w3.org/TR/html/document-metadata.html#the-meta-element * The Web Hypertext Application Technology Working Group provides very incomplete information: https://wiki.whatwg.org/wiki/MetaExtensions * CSS3 Device Adaptation Module Level 1 already wants to deprecate it, explaining mostly how to migrate *away* from it to some castle in the sky that no browser implements: https://drafts.csswg.org/css-device-adapt/#viewport-meta While i strongly believe in sticking to well-established standards, in the absence of standards and with atrocious behaviour being universal, there appears to be no alternative to using whatever works. The meta viewport element appears to be the only way to make real-world mobile browsers decently render any HTML page that does not have a fixed-width layout of 1000px. So use it, grudgingly. Originally suggested by xcv at dr dot com. Direction supported by espie@.
* Some broken terminal emulators (e.g. sakura) do the equivalentIngo Schwarze2018-05-141-1/+2
| | | | | | of "stty cols 0". Ignore that insanity rather than setting conf.output.width to an invalid value and embarking on infinite loops. Issue reported by Jesper Wallin <jesper at ifconfig dot se>, thanks!
* Fix a long-standing issue:Ingo Schwarze2018-05-094-16/+17
| | | | | | | | | 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 Schwarze2018-05-085-78/+43
| | | | | 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 Schwarze2018-05-083-18/+40
| | | | | | | | 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>.
* Minor correction: we render HTML character references hexadecimal,Ingo Schwarze2018-05-031-1/+1
| | | | not decimal; bentley@ changed that in html.c on July 14, 2017.
* skip printing the embedded style sheet if an external style is referencedIngo Schwarze2018-05-011-5/+6
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* Simpler description of output formats, shortening the manual page by 15 lines.Ingo Schwarze2018-04-291-99/+85
| | | | | | | Avoid the double redirection from -Tutf8 via -Tlocale to -Tascii. Add LC_CTYPE to the ENVIRONMENT section. While here, also correct a few inaccuracies and tweak some wordings. Triggered by a question from Laura Morales <lauretas at mail dot com>.
* Better mandoc(1) -I and -T options for Heirloom comparisons.Ingo Schwarze2018-04-241-7/+10
| | | | | | Filter through col(1) -b for Heirloom because it produces double encoding. Switch on mandoc(1) -Wall in groff comparisons. Update usage.
* multiple new entries from various sourcesIngo Schwarze2018-04-241-0/+41
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* replace my vague and idiosyncratic term "selflink"Ingo Schwarze2018-04-243-14/+14
| | | | | with the clearer and more usual "permalink"; suggested by John Gardner <gardnerjohng at gmail dot com>
* dedup issuesIngo Schwarze2018-04-201-1/+6
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* Tweak the description of -l:Ingo Schwarze2018-04-191-2/+3
| | | | | | | | | | | Avoid the misunderstanding that the essential purpose of -l is similar to the purpose of the -a option in mandoc(1), which is not the point: the fact that -l implies -a is merely a minor detail. The point of -l is to make man(1) behave like mandoc(1). Move the mention of -a to the end to de-emphasize it. Nate Bargmann reported that this seriously confused him, and i can see why.
* Compatibility with man-db:Ingo Schwarze2018-04-191-12/+56
| | | | | | | | | In page name mode (= man(1) default mode), also try to interpret names containing slashes as absolute or relative file names. Missing feature reported by Nate Bargmann on <groff at gnu dot org>, and the man-db maintainer Colin Watson <cjwatson at debian dot org> kindly explained to me how this is supposed to work.
* Use TIOCGWINSZ to reduce the default -Owidth during interactive useIngo Schwarze2018-04-132-5/+21
| | | | | | | on terminals narrower than 79 columns and the default -Oindent on terminals narrower than 66 columns. Requested by and feedback from pirofti@; mpi@ and juanfra@ also like the general direction.
* Make sure that mandoc only goes into UTF-8 mode if the user reallyIngo Schwarze2018-04-131-2/+14
| | | | | | selected UTF-8, not some other multibyte locale. This obviously makes no difference on OpenBSD but improves portability. Issue reported by <Nakayama at NetBSD> via wiz@.
* preserve comments before .Dd and .TH (typically Copyright and license)Ingo Schwarze2018-04-135-28/+83
| | | | | in full HTML output, but not with -Ofragment, e.g. in man.cgi(8); suggested by Thomas Klausner <wiz at NetBSD>
* preserve comments before .Dd when converting mdoc(7) to man(7)Ingo Schwarze2018-04-1111-25/+78
| | | | with mandoc -Tman; suggested by Thomas Klausner <wiz at NetBSD>
* Two new low-level roff(7) features:Ingo Schwarze2018-04-106-26/+110
| | | | | | * .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 Schwarze2018-04-095-25/+66
| | | | | | 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 Schwarze2018-04-096-48/+191
| | | | | Observed by Werner Lemberg on Nov 14, 2011 and rotting on my TODO list ever since.
* Stop documenting the non-portable .R man(7) macro. Neither groffIngo Schwarze2018-04-051-15/+2
| | | | | nor the heirloom-doctools support it. Adding it was a mistake in the first place.
* 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.
* use the portable \(lq and \(rq internally rather than \(Lq and \(RqIngo Schwarze2018-04-053-47/+47
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* 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
* Ouch, fix previous: In the edge case of a single-character stringIngo Schwarze2018-03-161-1/+2
| | | | | containing nothing but a single hyphen, the pointer got incremented twice at one point, causing a read overrun found by naddy@.
* Style message about bad input encoding of em-dashes as -- instead of \(em.Ingo Schwarze2018-03-164-9/+74
| | | | Suggested by Thomas Klausner <wiz at NetBSD>; discussed with jmc@.
* Soften the language discouraging special character escape sequences.Ingo Schwarze2018-03-151-6/+20
| | | | | | | After i improved their ASCII renderings in groff and mandoc some time ago, mathematical symbols can now be used in specialised mathematical manual pages like libm and some X libraries. Tweaks and OK jmc@.
* Add strndup(3) compat implementation.Ingo Schwarze2018-02-274-1/+71
| | | | Jan Stary reports that MacOS X Snow Leopard and older lacks it.
* After opening a file with gzdopen(3), we have to call gzclose(3) orIngo Schwarze2018-02-231-6/+31
| | | | | | we leak memory internally used by zlib to keep compression state. Bug reported by Wolfgang Mueller <vehk at vehk dot de> who also provided an incomplete patch, part of which i'm using in this commit.
* clarify documentation of macro keysIngo Schwarze2018-02-231-0/+23
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