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* add parentheses to the output where required for disambiguationIngo Schwarze2017-07-079-10/+10
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* Fix operator precedence according to Brian W. Kernighan and LorindaIngo Schwarze2017-07-0620-25/+78
| | | | | L. Cherry, "Typesetting Mathematics - User's Guide (Second Edition)", August 15, 1978, paragraph 23; swarm of bugs pointed out by bentley@.
* Messages of the -Wbase level now print STYLE:. Since thisIngo Schwarze2017-07-0444-80/+91
| | | | | | | | 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.
* catch up with the recent eqn(7) improvementsIngo Schwarze2017-06-2642-37/+229
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* cope with changes in BASE messagesIngo Schwarze2017-06-253-6/+9
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* style message about missing RCS ids; inspired by mdoclintIngo Schwarze2017-06-173-0/+3
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* Style message about legacy man(7) date format in mdoc(7) documentsIngo Schwarze2017-06-113-0/+3
| | | | | and operating system dependent messages about missing or unexpected Mdocdate; inspired by mdoclint(1).
* Parser reorg:Ingo Schwarze2017-05-043-10/+10
| | | | | Generate the first node on the roff level: .br Fix some column numbers in diagnostic messages while here.
* test infinite recursion in eqn(7) "define" statementsIngo Schwarze2017-03-114-2/+51
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* Now that markdown output is tested for almost everything, test allIngo Schwarze2017-03-081-0/+1
| | | | | | 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.
* Do not access a NULL pointer if a matrix or square root are empty.Ingo Schwarze2017-02-127-7/+34
| | | | Crashes found by tb@ with afl(1).
* Finally port the OpenBSD regression suite.Ingo Schwarze2017-02-0849-0/+413
Both kristaps@ and wiz@ repeated asked for this, literally for years.