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* During identifier parsing, handle undefined escape sequencesIngo Schwarze2022-06-031-3/+5
| | | | | | | | | | | | | | | | | | | | | | in the same way as groff: * \\ is always reduced to \ * \. is always reduced to . * other undefined escape sequences are usually reduced to the escape name, for example \G to G, except during the expansion of expanding escape sequences having the standard argument form (in particular \* and \n), in which case the backslash is preserved literally. Yes, this is confusing indeed. For example, the following have the same meaning: * .ds \. and .ds . which is not the same as .ds \\. * \*[\.] and \*[.] which is not the same as \*[\\.] * .ds \G and .ds G which is not the same as .ds \\G * \*[\G] and \*[\\G] which is not the same as \*[G] <- sic! To feel less dirty, have a leaning toothpick, if you are so inclined. This patch also slightly improves the string shown by the "escaped character not allowed in a name" error message.
* Messages of the -Wbase level now print STYLE:. Since thisIngo Schwarze2017-07-041-1/+2
| | | | | | | | 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.
* Finally port the OpenBSD regression suite.Ingo Schwarze2017-02-081-0/+17
Both kristaps@ and wiz@ repeated asked for this, literally for years.