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or macro, including context-dependent error handling inside tbl(7) code
and inside .ce/.rj blocks. Use it both in the top level roff(7) parser
and inside conditional blocks.
This fixes an assertion failure triggered by ".if 1 .ce" inside tbl(7)
code, found by tb@ using afl(1).
As a side benefit for readability, only one place remains in the
code that calls the main handler functions for the various roff(7)
requests. This patch also improves column numbers in some error
messages and various comments.
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This is needed because the TERMP_MULTICOL mode is designed such
that term_tbl() buffers all the cells of the table row before the
normal reset logic near the end of term_flushln() can be reached.
This fixes an assertion failure triggered by \z near the end
of a table cell, found by tb@ using afl(1).
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cells that horizontally span columns which contains "n" (number)
formatted cells on other rows. This requires updating total column
widths from "n" formatted cells before starting width distribution
from the spanning cells to their constituent columns.
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in the tbl(7) layout font modifier.
Get rid of the TBL_CELL_BOLD and TBL_CELL_ITALIC flags and use
the usual ESCAPE_FONT* enum mandoc_esc members from mandoc.h instead,
which simplifies and unifies some code.
While here, also support CB and CI in roff(7) \f escape sequences
and in roff(7) .ft requests for all output modes. Using those is
certainly not recommended because portability is limited even with
groff, but supporting them makes some existing third-party manual
pages look better, in particular in HTML output mode.
Bug-compatible with groff as far as i'm aware, except that i consider
font names starting with the '\n' (ASCII 0x0a line feed) character
so insane that i decided to not support them.
Missing feature reported by nabijaczleweli dot xyz in
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=992002.
I used none of the code from the initial patch submitted by
nabijaczleweli, but some of their ideas.
Final patch tested by them, too.
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output that are no longer printed since man_term.c rev. 1.236
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uses roff(7) tabulator settings to implement tables, and it used
to leak the changed tabulator settings from tables to the subsequent
roff(7) code. In mandoc/tbl_term.c rev. 1.54 (June 17, 2017), code
was added to be bug-compatible with groff.
In commit d0e03cf6 (Oct 20, 2020), GNU tbl(1) changed behaviour
to save the tabulator settings before starting a table and restore
them afterwards. Adjust mandoc for compatibility.
Since mandoc implements tables without using roff(7) tabulator
settings, saving and restoring tabulator settings is not needed in
mandoc. Simply deleting the code that changed tabulator settings
by reverting tbl_term.c rev. 1.54 is sufficient in mandoc.
Also adjust the desired output of the regression tests
to match the new behaviour of both groff and mandoc.
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Jan Schreiber <jes at posteo dot de> ran afl on mandoc and it turned
out mandoc tried to use spacing modifiers so large that they would
trigger assertion failures in term_ascii.c, function locale_advance().
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incomplete short layout lines followed by longer lines,
and spans at the beginning of layout lines
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no longer exist and NROFF/NOPTS were replaced with GROFF/GOPTS.
This doesn't change how things work in the protable version
of the test suite.
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to 1n rather than to 0n, in the same way as groff does.
This fixes misformatting reported by bentley@ in xkeyboard-config(7).
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next to a table line having fewer columns than the table as a whole.
Bug found by Stephen Gregoratto <dev at sgregoratto dot me>
with aerc-config(5).
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test table centering in an mdoc(7) document as well.
Related to tbl_term.c rev. 1.67.
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i thought. Fixing a bug in curs_addch(3) and minus 25 lines of code.
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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.
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* Do not discard data that lacks a matching layout cell but remains
within the number of columns of the table as a whole.
* Do not insert dummy data rows for any layout row starting with a
horizontal line, but only for layout rows that would discard all
the data on a matching non-empty data row.
* Print horizontal lines specified in the layout even if there is
no matching data cell.
* Improve the logic for extending vertical lines to adjacent rows,
for choosing cross marks versus line segments, and some related details.
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in horizontal orientation in the terminal formatter
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Improve width calculation of text blocks.
Reduces the groff/mandoc diff in Base+Xenocara by about 800 lines.
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Generate the first node on the roff level: .br
Fix some column numbers in diagnostic messages while here.
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widths of the remaining columns is already wider than the line
length, underflowing size_t and dying from ENOMEM is the wrong plan.
Instead, simply refrain from expanding anything in such a situation,
avoiding a crash that tb@ found with afl.
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Now that markdown output is tested for almost everything, test all
input files in -T markdown output mode by default and only mark
those files with SKIP_MARKDOWN that are not to be tested.
Much easier to read, and almost minus 40 lines of Makefile code.
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Both kristaps@ and wiz@ repeated asked for this,
literally for years.
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