On Mon, 12 Oct 2020 19:29:07 +0300 Eli Zaretskii wrote: >> From: Stephen Berman >> Cc: Stephen Berman , jidanni@jidanni.org, >> 43941@debbugs.gnu.org >> Date: Mon, 12 Oct 2020 18:17:41 +0200 >> >> >> But the face does not change if `(' is used instead of `（', e.g. copy >> >> the following two lines into a buffer and type `M-x html-mode' (or `M-x >> >> mhtml-mode', the face change appears in both): >> > >> > So which of them is a bug? >> >> In the context of the OP it seems clear that string face is wrong. So >> in my simpler example, that means the display of the second line >> containing FULLWIDTH LEFT PARENTHESIS is buggy. > > Do the ASCII parentheses have some syntactic significance in this > context, then? If not, why do the parentheses affect the meaning of > the apostrophe? It seems they do have some syntactic significance, since the following patch prevents string face in the examples with FULLWIDTH LEFT PARENTHESIS: