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Annotation of mandoc/TODO, Revision 1.180

1.1       kristaps    1: ************************************************************************
1.37      kristaps    2: * Official mandoc TODO.
1.180   ! schwarze    3: * $Id: TODO,v 1.179 2014/08/18 13:27:47 kristaps Exp $
1.27      kristaps    4: ************************************************************************
1.145     schwarze    5:
                      6: ************************************************************************
                      7: * crashes
                      8: ************************************************************************
                      9:
1.169     schwarze   10: - The abort() in bufcat(), html.c, can be triggered via buffmt_includes()
                     11:   by running -Thtml -Oincludes on a file containing a long .In argument.
                     12:   Fixing this will probably require reworking the whole bufcat() concept.
1.101     schwarze   13:
1.61      schwarze   14: ************************************************************************
1.1       kristaps   15: * missing features
                     16: ************************************************************************
1.70      kristaps   17:
1.79      schwarze   18: --- missing roff features ----------------------------------------------
                     19:
1.82      schwarze   20: - .ad (adjust margins)
                     21:   .ad l -- adjust left margin only (flush left)
                     22:   .ad r -- adjust right margin only (flush right)
                     23:   .ad c -- center text on line
                     24:   .ad b -- adjust both margins (alias: .ad n)
                     25:   .na   -- temporarily disable adjustment without changing the mode
                     26:   .ad   -- re-enable adjustment without changing the mode
                     27:   Adjustment mode is ignored while in no-fill mode (.nf).
1.150     schwarze   28:
                     29: - .fc (field control)
                     30:   found by naddy@ in xloadimage(1)
                     31:
1.160     schwarze   32: - .nr third argument (auto-increment step size, requires \n+)
                     33:   found by bentley@ in sbcl(1)  Mon, 9 Dec 2013 18:36:57 -0700
                     34:
1.80      schwarze   35: - .ns (no-space mode) occurs in xine-config(1)
                     36:   reported by brad@  Sat, 15 Jan 2011 15:45:23 -0500
1.61      schwarze   37:
1.81      schwarze   38: - .ta (tab settings) occurs in ircbug(1) and probably gnats(1)
                     39:   reported by brad@  Sat, 15 Jan 2011 15:50:51 -0500
1.167     schwarze   40:   also Tcl_NewStringObj(3) via wiz@  Wed, 5 Mar 2014 22:27:43 +0100
1.150     schwarze   41:
                     42: - .ti (temporary indent)
                     43:   found by naddy@ in xloadimage(1)
                     44:   found by bentley@ in nmh(1)  Mon, 23 Apr 2012 13:38:28 -0600
1.154     schwarze   45:
                     46: - .while and .shift
                     47:   found by jca@ in ratpoison(1)  Sun, 30 Jun 2013 12:01:09 +0200
1.79      schwarze   48:
1.132     schwarze   49: - \c (interrupted text) should prevent the line break
                     50:   even inside .Bd literal; that occurs in chat(8)
1.155     schwarze   51:   also found in cclive(1) - DocBook output
                     52:
                     53: - \h horizontal move
                     54:   found in cclive(1) DocBook output
                     55:   Anthony J. Bentley on discuss@  Sat, 21 Sep 2013 22:29:34 -0600
1.125     schwarze   56:
1.160     schwarze   57: - \n+ and \n- numerical register increment and decrement
                     58:   found by bentley@ in sbcl(1)  Mon, 9 Dec 2013 18:36:57 -0700
                     59:
1.167     schwarze   60: - \w'' width measurements
                     61:   would not be very useful without an expression parser, see below
                     62:   needed for Tcl_NewStringObj(3) via wiz@  Wed, 5 Mar 2014 22:27:43 +0100
                     63:
1.125     schwarze   64: - using undefined strings or macros defines them to be empty
                     65:   wl@  Mon, 14 Nov 2011 14:37:01 +0000
1.167     schwarze   66:
1.79      schwarze   67: --- missing mdoc features ----------------------------------------------
                     68:
1.18      schwarze   69: - fix bad block nesting involving multiple identical explicit blocks
                     70:   see the OpenBSD mdoc_macro.c 1.47 commit message
                     71:
1.1       kristaps   72: - .Bl -column .Xo support is missing
                     73:   ultimate goal:
                     74:   restore .Xr and .Dv to
                     75:   lib/libc/compat-43/sigvec.3
                     76:   lib/libc/gen/signal.3
                     77:   lib/libc/sys/sigaction.2
                     78:
1.28      schwarze   79: - edge case: decide how to deal with blk_full bad nesting, e.g.
                     80:   .Sh .Nm .Bk .Nm .Ek .Sh found by jmc@ in ssh-keygen(1)
                     81:   from jmc@  Wed, 14 Jul 2010 18:10:32 +0100
                     82:
1.74      schwarze   83: - \\ is now implemented correctly
                     84:   * when defining strings and macros using .ds and .de
                     85:   * when parsing roff(7) and man(7) macro arguments
                     86:   It does not yet work in mdoc(7) macro arguments
                     87:   because libmdoc does not yet use mandoc_getarg().
                     88:   Also check what happens in plain text, it must be identical to \e.
1.82      schwarze   89:
1.174     schwarze   90: - .Bd -centered implies -filled, not -unfilled, which is not
                     91:   easy to implement; it requires code similar to .ce, which
                     92:   we don't have either.
                     93:   Besides, groff has bug causing text right *before* .Bd -centered
                     94:   to be centered as well.
                     95:
1.82      schwarze   96: - .Bd -filled should not be the same as .Bd -ragged, but align both
                     97:   the left and right margin.  In groff, it is implemented in terms
                     98:   of .ad b, which we don't have either.  Found in cksum(1).
1.22      schwarze   99:
1.10      kristaps  100: - implement blank `Bl -column', such as
                    101:   .Bl -column
                    102:   .It foo Ta bar
                    103:   .El
1.11      kristaps  104:
                    105: - explicitly disallow nested `Bl -column', which would clobber internal
                    106:   flags defined for struct mdoc_macro
1.102     schwarze  107:
                    108: - In .Bl -column .It, the end of the line probably has to be regarded
                    109:   as an implicit .Ta, if there could be one, see the following mildly
                    110:   ugly code from login.conf(5):
                    111:     .Bl -column minpasswordlen program xetcxmotd
                    112:     .It path Ta path Ta value of Dv _PATH_DEFPATH
                    113:     .br
                    114:     Default search path.
                    115:   reported by Michal Mazurek <akfaew at jasminek dot net>
                    116:   via jmc@ Thu, 7 Apr 2011 16:00:53 +0059
1.42      schwarze  117:
                    118: - inside `.Bl -column' phrases, punctuation is handled like normal
                    119:   text, e.g. `.Bl -column .It Fl x . Ta ...' should give "-x -."
                    120:
                    121: - inside `.Bl -column' phrases, TERMP_IGNDELIM handling by `Pf'
                    122:   is not safe, e.g. `.Bl -column .It Pf a b .' gives "ab."
                    123:   but should give "ab ."
1.12      kristaps  124:
                    125: - set a meaningful default if no `Bl' list type is assigned
1.13      kristaps  126:
                    127: - have a blank `It' head for `Bl -tag' not puke
1.20      kristaps  128:
1.174     schwarze  129: - check whether it is correct that `D1' uses INDENT+1;
                    130:   does it need its own constant?
                    131:
1.20      kristaps  132: - prohibit `Nm' from having non-text HEAD children
                    133:   (e.g., NetBSD mDNSShared/dns-sd.1)
                    134:   (mdoc_html.c and mdoc_term.c `Nm' handlers can be slightly simplified)
1.109     schwarze  135:
1.174     schwarze  136: - support translated section names
                    137:   e.g. x11/scrotwm scrotwm_es.1:21:2: error: NAME section must be first
                    138:   that one uses NOMBRE because it is spanish...
                    139:   deraadt tends to think that section-dependent macro behaviour
                    140:   is a bad idea in the first place, so this may be irrelevant
                    141:
1.109     schwarze  142: - When there is free text in the SYNOPSIS and that free text contains
                    143:   the .Nm macro, groff somehow understands to treat the .Nm as an in-line
                    144:   macro, while mandoc treats it as a block macro and breaks the line.
                    145:   No idea how the logic for distinguishing in-line and block instances
                    146:   should be, needs investigation.
                    147:   uqs@  Thu, 2 Jun 2011 11:03:51 +0200
                    148:   uqs@  Thu, 2 Jun 2011 11:33:35 +0200
1.57      kristaps  149:
1.79      schwarze  150: --- missing man features -----------------------------------------------
                    151:
1.119     kristaps  152: - -T[x]html doesn't stipulate non-collapsing spaces in literal mode
1.80      schwarze  153:
1.79      schwarze  154: --- missing tbl features -----------------------------------------------
                    155:
1.171     schwarze  156: - look at the POSIX manuals in the books/man-pages-posix port,
                    157:   they use some unsupported tbl(7) features.
                    158:
1.174     schwarze  159: - investigate tbl(1) errors in sox(1)
                    160:   see also naddy@  Sat, 16 Oct 2010 23:51:57 +0200
1.105     kristaps  161:
                    162: - allow standalone `.' to be interpreted as an end-of-layout
                    163:   delimiter instead of being thrown away as a no-op roff line
                    164:   reported by Yuri Pankov, Wed 18 May 2011 11:34:59 CEST
1.79      schwarze  165:
                    166: --- missing misc features ----------------------------------------------
1.159     schwarze  167:
                    168: - italic correction (\/) in PostScript mode
                    169:   Werner LEMBERG on groff at gnu dot org  Sun, 10 Nov 2013 12:47:46
1.153     schwarze  170:
1.173     schwarze  171: - When makewhatis(8) encounters a FATAL parse error,
                    172:   it silently treats the file as formatted, which makes no sense
                    173:   at all for paths like man1/foo.1 - and which also contradicts
                    174:   what the manual says at the end of the description.
                    175:   The end result will be ENOENT for file names returned
                    176:   by mansearch() in manpage.file.
                    177:
1.171     schwarze  178: - makewhatis(8) for preformatted pages:
                    179:   parse the section number from the header line
                    180:   and compare to the section number from the directory name
                    181:
                    182: - Does makewhatis(8) detect missing NAME sections, missing names,
                    183:   and missing descriptions in all the file formats?
                    184:
1.79      schwarze  185: - clean up escape sequence handling, creating three classes:
                    186:   (1) fully implemented, or parsed and ignored without loss of content
                    187:   (2) unimplemented, potentially causing loss of content
                    188:       or serious mangling of formatting (e.g. \n) -> ERROR
                    189:       see textproc/mgdiff(1) for nice examples
                    190:   (3) undefined, just output the character -> perhaps WARNING
1.83      schwarze  191:
1.174     schwarze  192: - kettenis wants base roff, ms, and me  Fri, 1 Jan 2010 22:13:15 +0100 (CET)
                    193:
                    194: --- compatibility checks -----------------------------------------------
                    195:
                    196: - is .Bk implemented correctly in modern groff?
                    197:   sobrado@  Tue, 19 Apr 2011 22:12:55 +0200
                    198:
1.175     schwarze  199: - compare output to Heirloom roff, Solaris roff, and
                    200:   http://repo.or.cz/w/neatroff.git  http://litcave.rudi.ir/
1.178     schwarze  201:
                    202: - look at AT&T DWB http://www2.research.att.com/sw/download
                    203:   Carsten Kunze <carsten dot kunze at arcor dot de> has patches
                    204:   Mon, 4 Aug 2014 17:01:28 +0200
1.174     schwarze  205:
1.79      schwarze  206: - look at pages generated from reStructeredText, e.g. devel/mercurial hg(1)
                    207:   These are a weird mixture of man(7) and custom autogenerated low-level
                    208:   roff stuff.  Figure out to what extent we can cope.
1.80      schwarze  209:   For details, see http://docutils.sourceforge.net/rst.html
1.79      schwarze  210:   noted by stsp@  Sat, 24 Apr 2010 09:17:55 +0200
                    211:   reminded by nicm@  Mon, 3 May 2010 09:52:41 +0100
1.160     schwarze  212:
1.174     schwarze  213: - look at pages generated from ronn(1) github.com/rtomayko/ronn
                    214:   (based on markdown)
                    215:
1.160     schwarze  216: - look at pages generated from Texinfo source by yat2m, e.g. security/gnupg
                    217:   First impression is not that bad.
1.172     schwarze  218:
                    219: - look at pages generated by pandoc; see
                    220:   https://github.com/jgm/pandoc/blob/master/src/Text/Pandoc/Writers/Man.hs
                    221:   porting planned by kili@  Thu, 19 Jun 2014 19:46:28 +0200
1.71      schwarze  222:
                    223: - check compatibility with Plan9:
                    224:   http://swtch.com/usr/local/plan9/tmac/tmac.an
                    225:   http://swtch.com/plan9port/man/man7/man.html
                    226:   "Anthony J. Bentley" <anthonyjbentley@gmail.com> 28 Dec 2010 21:58:40 -0700
1.63      schwarze  227:
1.174     schwarze  228: - check compatibility with the man(7) formatter
                    229:   https://raw.githubusercontent.com/rofl0r/hardcore-utils/master/man.c
                    230:
1.1       kristaps  231: ************************************************************************
                    232: * formatting issues: ugly output
                    233: ************************************************************************
1.87      kristaps  234:
                    235: - a column list with blank `Ta' cells triggers a spurrious
                    236:   start-with-whitespace printing of a newline
1.1       kristaps  237:
1.39      schwarze  238: - In .Bl -column,
                    239:   .It Em Authentication<tab>Key Length
                    240:   ought to render "Key Length" with emphasis, too,
                    241:   see OpenBSD iked.conf(5).
1.123     schwarze  242:   reported again Nicolas Joly via wiz@ Wed, 12 Oct 2011 00:20:00 +0200
1.39      schwarze  243:
1.1       kristaps  244: - empty phrases in .Bl column produce too few blanks
                    245:   try e.g. .Bl -column It Ta Ta
                    246:   reported by millert Fri, 02 Apr 2010 16:13:46 -0400
1.48      schwarze  247:
1.83      schwarze  248: - .%T can have trailing punctuation.  Currently, it puts the trailing
                    249:   punctuation into a trailing MDOC_TEXT element inside its own scope.
                    250:   That element should rather be outside its scope, such that the
                    251:   punctuation does not get underlines.  This is not trivial to
                    252:   implement because .%T then needs some features of in_line_eoln() -
                    253:   slurp all arguments into one single text element - and one feature
                    254:   of in_line() - put trailing punctuation out of scope.
                    255:   Found in mount_nfs(8) and exports(5), search for "Appendix".
                    256:
1.147     schwarze  257: - Trailing punctuation after .%T triggers EOS spacing, at least
                    258:   outside .Rs (eek!).  Simply setting ARGSFL_DELIM for .%T is not
                    259:   the right solution, it sends mandoc into an endless loop.
                    260:   reported by Nicolas Joly  Sat, 17 Nov 2012 11:49:54 +0100
                    261:
1.174     schwarze  262: - global variables in the SYNOPSIS of section 3 pages
                    263:   .Vt vs .Vt/.Va vs .Ft/.Va vs .Ft/.Fa ...
                    264:   from kristaps@  Tue, 08 Jun 2010 11:13:32 +0200
                    265:
1.48      schwarze  266: - in enclosures, mandoc sometimes fancies a bogus end of sentence
                    267:   reminded by jmc@  Thu, 23 Sep 2010 18:13:39 +0059
1.149     schwarze  268:
                    269: - formatting /usr/local/man/man1/latex2man.1 with groff and mandoc
                    270:   reveals lots of bugs both in groff and mandoc...
                    271:   reported by bentley@  Wed, 22 May 2013 23:49:30 -0600
1.171     schwarze  272:
                    273: --- PDF issues ---------------------------------------------------------
                    274:
                    275: - PDF output doesn't use a monospaced font for .Bd -literal
                    276:   Example: "mandoc -Tpdf afterboot.8 > output.pdf && pdfviewer output.pdf".
                    277:   Search the text "Routing tables".
                    278:   Also check what PostScript mode does when fixing this.
                    279:   reported by juanfra@ Wed, 04 Jun 2014 21:44:58 +0200
1.173     schwarze  280:
                    281: --- HTML issues --------------------------------------------------------
                    282:
1.174     schwarze  283: - <dl><dt><dd> formatting is ugly
                    284:   hints are easy to find on the web, e.g.
                    285:   http://stackoverflow.com/questions/1713048/
                    286:   see also matthew@  Fri, 18 Jul 2014 19:25:12 -0700
1.180   ! schwarze  287:
        !           288: - The tables used to render the three-part page headers actually force
        !           289:   the width of the <body> to the max-width given for <html>.
        !           290:   Not yet sure how to fix that...
        !           291:   Observed by an Anonymous Coward on undeadly.org:
        !           292:   http://undeadly.org/cgi?action=article&sid=20140925064244&pid=1
1.177     schwarze  293:
                    294: - consider whether <var> can be used for Ar Dv Er Ev Fa Va.
                    295:   from bentley@  Wed, 13 Aug 2014 09:17:55 -0600
1.174     schwarze  296:
1.173     schwarze  297: - check https://github.com/trentm/mdocml
1.35      kristaps  298:
1.1       kristaps  299: ************************************************************************
1.104     kristaps  300: * formatting issues: gratuitous differences
1.1       kristaps  301: ************************************************************************
1.65      kristaps  302:
                    303: - .Rv (and probably .Ex) print different text if an `Nm' has been named
                    304:   or not (run a manual without `Nm blah' to see this).  I'm not sure
                    305:   that this exists in the wild, but it's still an error.
1.38      schwarze  306:
                    307: - In .Bl -bullet, the groff bullet is "+\b+\bo\bo", the mandoc bullet
                    308:   is just "o\bo".
                    309:   see for example OpenBSD ksh(1)
1.103     schwarze  310:
1.174     schwarze  311: - In .Bl -enum -width 0n, groff continues one the same line after
                    312:   the number, mandoc breaks the line.
                    313:   mail to kristaps@  Mon, 20 Jul 2009 02:21:39 +0200
                    314:
1.103     schwarze  315: - .Pp between two .It in .Bl -column should produce one,
                    316:   not two blank lines, see e.g. login.conf(5).
                    317:   reported by jmc@  Sun, 17 Apr 2011 14:04:58 +0059
1.129     schwarze  318:   reported again by sthen@  Wed, 18 Jan 2012 02:09:39 +0000 (UTC)
1.39      schwarze  319:
1.83      schwarze  320: - If the *first* line after .It is .Pp, break the line right after
                    321:   the tag, do not pad with space characters before breaking.
                    322:   See the description of the a, c, and i commands in sed(1).
                    323:
                    324: - If the first line after .It is .D1, do not assert a blank line
                    325:   in between, see for example tmux(1).
                    326:   reported by nicm@  13 Jan 2011 00:18:57 +0000
1.147     schwarze  327:
                    328: - Trailing punctuation after .It should trigger EOS spacing.
                    329:   reported by Nicolas Joly  Sat, 17 Nov 2012 11:49:54 +0100
                    330:   Probably, this should be fixed somewhere in termp_it_pre(), not sure.
1.83      schwarze  331:
1.39      schwarze  332: - .Nx 1.0a
                    333:   should be "NetBSD 1.0A", not "NetBSD 1.0a",
                    334:   see OpenBSD ccdconfig(8).
1.83      schwarze  335:
1.39      schwarze  336: - In .Bl -tag, if a tag exceeds the right margin and must be continued
                    337:   on the next line, it must be indented by -width, not width+1;
                    338:   see "rule block|pass" in OpenBSD ifconfig(8).
1.56      schwarze  339:
1.83      schwarze  340: - When the -width string contains macros, the macros must be rendered
                    341:   before measuring the width, for example
                    342:     .Bl -tag -width ".Dv message"
                    343:   in magic(5), located in src/usr.bin/file, is the same
                    344:   as -width 7n, not -width 11n.
1.129     schwarze  345:   The same applies to .Bl -column column widths;
                    346:   reported again by Nicolas Joly Thu, 1 Mar 2012 13:41:26 +0100 via wiz@ 5 Mar
1.157     schwarze  347:   reported again by Franco Fichtner Fri, 27 Sep 2013 21:02:28 +0200
                    348:   An easy partial fix would be to just skip the first word if it starts
                    349:   with a dot, including any following white space, when measuring.
1.83      schwarze  350:
1.56      schwarze  351: - The \& zero-width character counts as output.
                    352:   That is, when it is alone on a line between two .Pp,
                    353:   we want three blank lines, not two as in mandoc.
1.83      schwarze  354:
1.64      schwarze  355: - Header lines of excessive length:
                    356:   Port OpenBSD man_term.c rev. 1.25 to mdoc_term.c
                    357:   and document it in mdoc(7) and man(7) COMPATIBILITY
                    358:   found while talking to Chris Bennett
1.83      schwarze  359:
                    360: - trailing whitespace must be ignored even when followed by a font escape,
                    361:   see for example
                    362:     makes
                    363:     \fBdig \fR
                    364:     operate in batch mode
                    365:   in dig(1).
1.166     schwarze  366:
                    367: ************************************************************************
                    368: * warning issues
                    369: ************************************************************************
                    370:
                    371: - check that MANDOCERR_BADTAB is thrown in the right cases,
                    372:   i.e. when finding a literal tab character in fill mode,
                    373:   and possibly change the wording of the warning message
                    374:   to refer to fill mode, not literal mode
                    375:   See the mail from Werner LEMBERG on the groff list,
                    376:   Fri, 14 Feb 2014 18:54:42 +0100 (CET)
1.174     schwarze  377:
                    378: - warn about "new sentence, new line"
                    379:
                    380: - mandoc_special does not really check the escape sequence,
                    381:   but just the overall format
                    382:
                    383: - integrate mdoclint into mandoc ("end-of-line whitespace" thread)
                    384:   from jmc@  Mon, 13 Jul 2009 17:12:09 +0100
                    385:   from kristaps@  Mon, 13 Jul 2009 18:34:53 +0200
                    386:   from jmc@  Mon, 13 Jul 2009 17:45:37 +0059
                    387:   from kristaps@  Mon, 13 Jul 2009 19:02:03 +0200
                    388:
                    389: - -Tlint parser errors and warnings to stdout
                    390:   to tech@mdocml, naddy@  Wed, 28 Sep 2011 11:21:46 +0200
                    391:   wait!  kristaps@  Sun, 02 Oct 2011 17:12:52 +0200
                    392:
                    393: - for system errors, use errno/strerror/warn/err
                    394:
                    395: ************************************************************************
                    396: * documentation issues
                    397: ************************************************************************
                    398:
                    399: - mention hyphenation rules:
                    400:   breaking at letter-letter in text mode (not macro args)
                    401:   proper hyphenation is unimplemented
                    402:
                    403: - talk about spacing around delimiters
                    404:   to jmc@, kristaps@  Sat, 23 Apr 2011 17:41:27 +0200
                    405:
                    406: - mark macros as: page structure domain, manual domain, general text domain
                    407:   is this useful?
                    408:
                    409: - mention /usr/share/misc/mdoc.template in mdoc(7)?
1.1       kristaps  410:
1.9       kristaps  411: ************************************************************************
                    412: * performance issues
                    413: ************************************************************************
1.176     schwarze  414:
                    415: - Why are we using MAP_SHARED, not MAP_PRIVATE for mmap(2)?
                    416:   How does SQLITE_CONFIG_PAGECACHE actually work?  Document it!
                    417:   from kristaps@  Sat, 09 Aug 2014 13:51:36 +0200
1.9       kristaps  418:
                    419: Several areas can be cleaned up to make mandoc even faster.  These are
                    420:
                    421: - improve hashing mechanism for macros (quite important: performance)
                    422:
                    423: - improve hashing mechanism for characters (not as important)
1.23      kristaps  424:
1.37      kristaps  425: - the PDF file is HUGE: this can be reduced by using relative offsets
1.115     kristaps  426:
                    427: - instead of re-initialising the roff predefined-strings set before each
                    428:   parse, create a read-only version the first time and copy it
1.37      kristaps  429:
1.23      kristaps  430: ************************************************************************
                    431: * structural issues
                    432: ************************************************************************
1.122     schwarze  433:
                    434: - We use the input line number at several places to distinguish
                    435:   same-line from different-line input.  That plainly doesn't work
                    436:   with user-defined macros, leading to random breakage.
1.67      schwarze  437:
                    438: - Find better ways to prevent endless loops
                    439:   in roff(7) macro and string expansion.
1.91      schwarze  440:
1.96      schwarze  441: - Finish cleanup of date handling.
1.91      schwarze  442:   Decide which formats should be recognized where.
                    443:   Update both mdoc(7) and man(7) documentation.
                    444:   Triggered by  Tim van der Molen  Tue, 22 Feb 2011 20:30:45 +0100
1.170     schwarze  445:
                    446: - Consider creating some views that will make the database more
                    447:   readable from the sqlite3 shell.  Consider using them to
                    448:   abstract from the database structure, too.
                    449:   suggested by espie@  Sat, 19 Apr 2014 14:52:57 +0200
                    450:
1.179     kristaps  451: ************************************************************************
                    452: * CGI issues
                    453: ************************************************************************
                    454:
                    455:  - Enable HTTP compression by detecting gzip encoding and filtering
                    456:    output through libz.
                    457:  - Sandbox (see OpenSSH).
                    458:  - Enable caching support via HTTP 304 and If-Modified-Since.
                    459:  - Allow for cgi.h to be overridden by CGI environment variables.
                    460:    Otherwise, binary distributions will inherit the compile-time
                    461:    behaviour, which is not optimal.
                    462:  - Have Mac OSX systems automatically disable -static compilation of the
                    463:    CGI: -static isn't supported.

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