Am Sun, 20 Feb 2022 23:39:00 +0100 schrieb Thibaut Cuvelier <tcuvel...@lyx.org>:
> On Sun, 20 Feb 2022 at 21:53, Thibaut Cuvelier <tcuvel...@lyx.org> wrote: > > > On Sun, 20 Feb 2022 at 17:39, Kornel Benko <kor...@lyx.org> wrote: > > > >> Am Sun, 20 Feb 2022 17:04:54 +0100 > >> schrieb Thibaut Cuvelier <tcuvel...@lyx.org>: > >> > >> > On Sun, 20 Feb 2022 at 13:12, Kornel Benko <kor...@lyx.org> wrote: > >> > > >> > > In unicodesymbols we find > >> > > > >> > > 0x025b "\\textepsilon" "tipa" ... > >> > > 0x03b5 "\\textepsilon" "textgreek" ... > >> > > > >> > > >> > 0x03b5 is a true epsilon ( > >> https://unicodemap.org/details/0x03B5/index.html), > >> > i.e. a letter in the Greek alphabet, while 0x025b is only something that > >> > looks like an epsilon (https://unicodemap.org/details/0x025b/index.html > >> ), > >> > an IPA symbol. For the latter (0x025b), it's rather an "open-mid front > >> > unrounded vowel" (according to > >> > https://upload.wikimedia.org/wikipedia/commons/8/8f/IPA_chart_2020.svg > >> ). > >> > Although the TIPA package is using \textepsilon to enter this character > >> ( > >> > https://mirror.lyrahosting.com/CTAN/fonts/tipa/tipaman.pdf, page 33), > >> so > >> > I'm not sure there's anything to correct. > >> > > >> > > >> > > 0x204e "\\textasteriskcentered" "textcomp" ... > >> > > 0x*2217* "\\textasteriskcentered" "textcomp" ... > >> > > > >> > > >> > According to Wikipedia (https://en.wikipedia.org/wiki/Asterisk), > >> 0x204e is > >> > a "low asterisk" and 0x2217 is the "asterisk operator". It looks like > >> > \textasteriskcentered should output a 0x2217 (based my understanding of > >> > http://hevea.inria.fr/examples/test/sym.html) and \textasterisklow a > >> 0x204e > >> > (https://www.johndcook.com/unicode_latex.html: it's recognised by > >> MathGL > >> > http://mathgl.sourceforge.net/docs_v1/mathgl_en_10.html and STIX > >> > http://www.ams.org/STIX/bnb/stix-tbl-2006-10-18.asc). I'd say this is a > >> > mistake in unicodesymbols. > >> > > >> > For the math mode, these two symbols are found as \ast, I have no idea > >> > about the semantic difference with the character * (0x002a): probably > >> more > >> > the operator, because it's usually used as times for calculators… > >> > >> My problem is more how to handle such cases (there are 44 conflicts in > >> unicodesymbols). > >> > >> Say, we search for '⁎' (== 0x204e), > >> lyx outputs \textasteriskcentered > >> and lyxfind.cpp uses '∗' (== 0x2217) > >> > >> This means, we cannot find this char. > >> > >> I am not interested in the meaning of these unicode chars. The problem > >> for findadv is that > >> there are latex commands which create different unicode depending on moon > >> phase. > >> > > > > Based on my understanding of this issue, there will always be some > > discrepancy, as the mapping depends on the context (text, math, or TIPA, > > mostly, as I could see). I believe it's hard to mistake the math mapping > > with the two others, but I don't see a similar way to tell TIPA characters > > from the others, as it looks like they are entered like normal letters > > (i.e. not separated like the math mode): it's sure the TIPA mapping is the > > best one within an IPA inset, but what about outside? I don't know > > phonetics enough (especially typesetting with LyX) :/. > > > > Would you have a script that finds all these occurrences or a list? Maybe > > quite a few could be resolved like the asterisk. > > > > Would it be helpful if some duplicate characters were marked as deprecated? > For \\'\\textalpha, for instance (I guess it's the same for all Greek > vowels with tonos/oxia), 0x1F71 is disallowed (see line idna2008 in > https://util.unicode.org/UnicodeJsps/character.jsp?a=1F71), unlike 0x3AC. That would help. In fact my script already uses this info, but only a very few codes are marked as such. Kornel
pgpveSA23KwnD.pgp
Description: Digitale Signatur von OpenPGP
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