Valery Ushakov wrote in <20191223222133.gj24...@pony.stderr.spb.ru>: |On Mon, Dec 23, 2019 at 22:13:23 +0100, Steffen Nurpmeso wrote: |> Valeriy E. Ushakov wrote in <20191223201734.0e415f...@cvs.netbsd.org>: |> |>|Modified Files: |>| src/share/tmac: doc2html |>| |>|Log Message: |>|Fix if/else syntax in previous. |> |> What was wrong with that? |> |> . ie 'utf8'\*[.T]' \ |> . ds mx:istty |> . el .ie 'latin1'\*[.T]' \ |> . ds mx:istty |> . el .ie 'ascii'\*[.T]' \ |> . ds mx:istty |> . el .ie 'pdf'\*[.T]' \ |> . mx:dump-init-pdf |> . el .ie 'html'\*[.T]' \ |> . mx:dump-init-html |> . el \ |> . rm mx:gogogo |> |> is perfectly valid roff code. | |Try running it with warnings (-ww), as the build process does. You'll |get | | warning: unbalanced .el request | |Consider | | .ie '\*(.T'ascii' .ds html-charset US-ASCII | .el .ie '\*(.T'latin1' .ds html-charset ISO-8859-1 | .el .ie '\*(.T'utf8' .ds html-charset UTF-8 | .el .ab unsupported encoding \*(.T | |executed with -Tascii. | |Troff reads .ie and checks the condition. The condition is true and |so the rest of the line is executed. Then troff reads .el that |matches successful .ie, so the .el is discarded. | |Then it reads .el which is not matched with any .ie that troff has |seen. It's usually silently discarded, but since we run with -ww we |get the warning about an unbalanced .el | |The the same happens again for the next .el, the number of warnings |depends on which .ie in the chain was successful (no warnings for |utf-8, 1 warning for latin1, two for ascii).
Interesting. You are right. Never encountered that, i have to change some macros of mine! A nice Christmas i wish! Ciao from Germany, --steffen | |Der Kragenbaer, The moon bear, |der holt sich munter he cheerfully and one by one |einen nach dem anderen runter wa.ks himself off |(By Robert Gernhardt)
