* LMTX: reimplementing texquotes as OTF feature @ 2022-11-11 21:19 Leah Neukirchen via ntg-context 2022-11-11 22:51 ` Hans Hagen via ntg-context 0 siblings, 1 reply; 3+ messages in thread From: Leah Neukirchen via ntg-context @ 2022-11-11 21:19 UTC (permalink / raw) To: ntg-context; +Cc: Leah Neukirchen Hi, as Hans recommended in the last video meeting, I tried to implement the texquotes feature using OTF features, and hit two problems: 1) To support German quotes as well, I have two ligatures that end up as the same glyph: `` -> “ "' -> “ This can't be in the same ligature feature, as it will overwrite the table entry with a duplicate key. After some fiddling, I decided to map "' to a Unicode PUA symbol and then add a second feature that maps this symbol to “ using the substitute feature. This works for TeX Gyre Schola. But perhaps someone knows a nicer way. 2) This approach doesn't work for lmodern or palatino, I still get "' as inch-sign/quote there... anything else I need to tweak for these fonts? \startluacode fonts.handlers.otf.addfeature { name = "texlig", type = "ligature", data = { ['“'] = { "`", "`" }, ['”'] = { "'", "'" }, ['„'] = { '"', "`" }, [''] = { '"', "'" }, ['‘'] = { "`" }, ['’'] = { "'" } } } fonts.handlers.otf.addfeature { name = "texsub", type = "substitute", data = { [''] = '“', } } \stopluacode % with lmodern or palatino it breaks \setupbodyfont[schola] \definefontfeature[ltest][texlig=yes,texsub=yes,trep=no] \addff{ltest} \starttext ``foo'' `foo' "`foo"' 19" rack \stoptext Thanks, -- Leah Neukirchen <leah@vuxu.org> https://leahneukirchen.org/ ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: LMTX: reimplementing texquotes as OTF feature 2022-11-11 21:19 LMTX: reimplementing texquotes as OTF feature Leah Neukirchen via ntg-context @ 2022-11-11 22:51 ` Hans Hagen via ntg-context 2022-11-12 14:57 ` Leah Neukirchen via ntg-context 0 siblings, 1 reply; 3+ messages in thread From: Hans Hagen via ntg-context @ 2022-11-11 22:51 UTC (permalink / raw) To: Leah Neukirchen via ntg-context; +Cc: Hans Hagen On 11/11/2022 10:19 PM, Leah Neukirchen via ntg-context wrote: > Hi, > > as Hans recommended in the last video meeting, I tried to implement > the texquotes feature using OTF features, and hit two problems: > > 1) To support German quotes as well, I have two ligatures that end > up as the same glyph: > `` -> “ > "' -> “ > This can't be in the same ligature feature, as it will overwrite > the table entry with a duplicate key. > > After some fiddling, I decided to map "' to a Unicode PUA symbol > and then add a second feature that maps this symbol to “ using > the substitute feature. This works for TeX Gyre Schola. > But perhaps someone knows a nicer way. > > 2) This approach doesn't work for lmodern or palatino, I still > get "' as inch-sign/quote there... anything else I need to tweak > for these fonts? > > > \startluacode > fonts.handlers.otf.addfeature { > name = "texlig", > type = "ligature", > data = { > ['“'] = { "`", "`" }, > ['”'] = { "'", "'" }, > ['„'] = { '"', "`" }, > [''] = { '"', "'" }, > ['‘'] = { "`" }, > ['’'] = { "'" } > } > } > fonts.handlers.otf.addfeature { > name = "texsub", > type = "substitute", > data = { > [''] = '“', > } > } > \stopluacode > > % with lmodern or palatino it breaks > \setupbodyfont[schola] > > \definefontfeature[ltest][texlig=yes,texsub=yes,trep=no] > \addff{ltest} > > \starttext > > ``foo'' `foo' "`foo"' 19" rack > > \stoptext can you show what is wrong and what it should be with fonts.handlers.otf.addfeature { name = "germantexlig", type = "ligature", data = { ['“'] = { "`", "`" }, ['”'] = { "'", "'" }, ['„'] = { '"', "`" }, ['“'] = { '"', "'" }, ['‘'] = { "`" }, ['’'] = { "'" } } } best not use an existign feature because we accumulate ... features come in order (you can force order if needed as you probably saw in one of the test files) \definefontfeature[ltest][germantexlig=yes,trep=no] \addff{ltest} ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: LMTX: reimplementing texquotes as OTF feature 2022-11-11 22:51 ` Hans Hagen via ntg-context @ 2022-11-12 14:57 ` Leah Neukirchen via ntg-context 0 siblings, 0 replies; 3+ messages in thread From: Leah Neukirchen via ntg-context @ 2022-11-12 14:57 UTC (permalink / raw) To: Hans Hagen via ntg-context; +Cc: Leah Neukirchen [-- Attachment #1: Type: text/plain, Size: 1043 bytes --] Hans Hagen via ntg-context <ntg-context@ntg.nl> writes: > can you show what is wrong and what it should be with > > fonts.handlers.otf.addfeature { > name = "germantexlig", > type = "ligature", > data = { > ['“'] = { "`", "`" }, > ['”'] = { "'", "'" }, > ['„'] = { '"', "`" }, > ['“'] = { '"', "'" }, > ['‘'] = { "`" }, > ['’'] = { "'" } > } > } Since `` and "' map to the same character, only "' works. The table has only 5 entries, not 6! (This took me a while to realize. ;)) > best not use an existign feature because we accumulate ... features > come in order (you can force order if needed as you probably saw in > one of the test files) > > \definefontfeature[ltest][germantexlig=yes,trep=no] \addff{ltest} I think "texlig" and "texsub" aren't existing features. But even renaming doesn't help. I've attached the working Schola screenshot and the broken LModern behavior. [-- Attachment #2: 2022-11-12-155544_188x27_scrot.png --] [-- Type: image/png, Size: 2175 bytes --] [-- Attachment #3: 2022-11-12-155557_198x23_scrot.png --] [-- Type: image/png, Size: 2256 bytes --] [-- Attachment #4: Type: text/plain, Size: 67 bytes --] -- Leah Neukirchen <leah@vuxu.org> https://leahneukirchen.org/ [-- Attachment #5: Type: text/plain, Size: 496 bytes --] ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-11-12 14:57 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2022-11-11 21:19 LMTX: reimplementing texquotes as OTF feature Leah Neukirchen via ntg-context 2022-11-11 22:51 ` Hans Hagen via ntg-context 2022-11-12 14:57 ` Leah Neukirchen via ntg-context
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