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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.
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In UTF-8 output, that renders as ASCII HYPHEN-MINUS (U+002D)
rather than HYPHEN (U+2010), which looks better and matches groff.
In ASCII output, it makes no difference.
Suggested by naddy@.
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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.
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in mdoc(7) .Bl -tag and man(7) .TP, but not in man(7) .IP.
Quirk reported by Jan Stary <hans at stare dot cz> on ports@.
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into it and by only handling NUL-terminated strings.
Minus 25 lines of code, no functional change.
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less(1) -T and :t ctags(1)-like functionality to jump to the
definitions of various terms inside manual pages.
To be polished in the tree, so bear with me and report issues.
Technically, if less(1) is used as a pager, information is collected
by the mdoc(7) terminal formatter, first stored using the ohash
library, then ultimately written to a temporary file which is passed
to less via -T. No change intended for other output formatters or
when running without a pager.
Based on an idea from Kristaps using feedback from many, in particular
phessler@ nicm@ millert@ halex@ doug@ kspillner@ deraadt@.
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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.
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Almost completely mechanical, no functional change.
Written on the train from Exeter to London returning from p2k15.
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There is a first rounding to basic units on the input side.
After that, rounding rules differ between requests and macros.
Requests round to the nearest possible character position.
Macros round to the next character position to the left.
Implement that by changing the return value of term_hspan()
to basic units and leaving the second scaling and rounding stage
to the formatters instead of doing it in the terminal handler.
Improves for example argtable2(3).
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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.
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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.
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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.
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man(7) always prints a blank line, mdoc(7) doesn't.
Problem in mdoc(7) reported by kristaps@.
mdoc(7) part of the patch tested by kristaps@.
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Instead, use the same logic as for man(7).
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of .Do/.Dc, .Dq, .Lb, and .St untouched.
Reduces groff-mandoc differences in base by about 7%.
Reminded of the issue by naddy@.
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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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found by jsg@ with afl, test case #16
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Minus one struct member, minus 17 lines of code, no functional change.
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font stack. The latter fail after the stack is grown with realloc().
Fixing an assertion failure found by jsg@ with afl some time ago
(test case number 51).
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Replace tail recursion by iteration when walking the syntax trees.
No functional change.
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when the only child is .Mt, not when the preceding node is .An,
to improve robustness. Triggered by a question from Svyatoslav
Mishyn <juef at openmailbox dot org> (Crux Linux).
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Not exactly recommended for use, rather for groff compatibility.
While here, introduce similar SHRT_MAX limits as in man(7),
fixing a few cases of infinite output found by jsg@ with afl.
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minus twenty lines of code in spite of enhanced functionality
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- .sp with an invalid argument is .sp 1v, not .sp 0v
- in man(1), trailing garbage doesn't make scaling units invalid
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In particular, make it work in no-fill mode, too.
Reminded by Carsten dot Kunze at arcor dot de (Heirloom roff).
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* The first argument of .Pf is not parsed.
* Normal delimiter handling does not apply to the first argument of .Pf.
* Warn if nothing follows a prefix (inspired by groff_mdoc(7)).
* In that case, do not suppress spacing.
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Fixing a NULL access jsg@ found with afl.
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1. Correctly parse stray .Ec without preceding .Eo,
avoiding an assertion violation found by jsg@ with afl.
2. Correctly parse .Ec arguments when breaking another block.
3. Correct spacing around closing delimiter when breaking another block.
4. Sync some related formatting control from -Tascii to -Thtml.
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and not trigger an assertion when there is more than one argument;
the latter found by jsg@ with afl.
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which can for example happen for .Sh Xo .Sh without .Xc.
Crash found by jsg@ with afl.
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output handler because the high level terminal formatters could be
tricked into setting the left margin further to the right than the
right margin. Today, jsg@ found more of these with afl.
Change the internal interface between both levels, aiming for
simplicity and robustness of the code. Treat both margins as
*independent* settings: Now, termp.offset is the requested left
margin, and termp.rmargin is the available space. Let the lower
level cope with that case of insufficient space.
Obviously, high level code that does centering or flush right
still has to do careful checks, so i did a full audit of margin
settings in the terminal formatters.
Fixes crashes caused by excessively long title or date strings in
the man(7) footer, operating system or date strings in the mdoc(7)
footer, volume strings in the man(7) or mdoc(7) header, and a few
cases related to some non-prologue macros.
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just like groff; minibug noticed by bentley@.
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* .No selects the default font; relevant e.g. in .Bf blocks
* no need to force empty .Li elements
* closing delimiters as leading macro arguments do not suppress space
* opening delimiters at the end of a macro line do not suppress space
* correctly handle delimiter spacing in -Tman
As a side effect, these fixes let mandoc warn about empty .No macros
as requested by bentley@.
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at the beginning of the first item of an enclosing list
right at the beginning of a new section or subsection;
minibug reported by Steffen Nurpmeso <sdaoden at yandex dot com>
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1. Support specifying the .Bd and .Bl -offset as a macro default width;
while here, simplify the code handling the same for .Bl -width.
2. Correct handling of .Bl -offset arguments: unlike .Bd -offset, the
arguments "left", "indent", and "indent-two" have no special meaning.
3. Fix the scaling of string length -offset and -width arguments in -Thtml.
Triggered by an incomplete documentation patch from bentley@.
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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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that start at the beginning of an input line
but end before the end of an input line
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this doesn't change anything for ASCII and UTF-8.
Problem reported by bentley@.
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delete one static function, one flag #define, and 25 lines of code;
no functional change
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