Eli Zaretskii writes: >> From: Amin Bandali >> Cc: rpluim@gmail.com, valizadeh.ho@gmail.com, 41005@debbugs.gnu.org, >> pipcet@gmail.com >> Date: Tue, 21 Jul 2020 22:12:19 -0400 >> >> >> Lastly, it might be worth mentioning that if I recall correctly, when >> >> using xfthb with emacs-27, I observe the same issue. Which may suggest >> >> that perhaps the issue is related to Emacs's HarfBuzz support. >> > >> > But that's exactly the configuration that was fixed... >> > >> >> It is strange. I did some more testing. Whether with xfthb (emacs-27) >> or ftcrhb (master), it seems like typing in Persian in *scratch* works >> okay. However, if I paste (yank) Persian text, e.g. from Wikipedia, >> into *scratch*, the issue surfaces and yanked text is garbled. Further, >> Persian text in Gnus's article-mode and in message-mode is always >> garbled to begin with. It does seem like a HarfBuzz issue to me. >> Please feel free to grab the Vazir font and test for yourself. > > Does this happen only with that font, or does it happen with any font > that supports Persian? > > If it's only that font, then I don't think we should try solving this > in Emacs; please report this to the font developers. > It appears to happen with any font supporting Persian/Arabic. Examples include DejaVu Sans and Noto Sans Arabic. > > If the problem happens with any Persian-supporting font, then please > tell the details: which page you copy/paste from, what browser did you > use to copy that text, detailed steps for how to reproduce in Gnus, > etc. This bug report described a problem that happened in different > situation (the Emacs EWW browser), so it's hard to know what exactly > happens in your case. > > Thanks. > Examples of pages I copied excerpts from include the front page of the Persian Wikipedia , as well as the Persian translation of GNU's homepage . The issue does not seem to be specific to a particular text, and appears to occur when pasting any Persian text into a buffer. As for the browser, I tried with both GNU IceCat and Emacs's EWW; same results. I am able to reproduce by pasting any random Persian text into any Emacs buffer. In the case of Gnus, simply pressing RET on the subject of an email in gnus-summary-mode to have it displayed using gnus-article-mode shows the Persian text in the email body as garbled. Hope this helps. * * * Actually, as I was about to hit send, it /just/ occurred to me to try with -Q or -q, and in both cases I do not see this bug! How strange! I'll start bisecting my Emacs configuration and will report back if I manage to find the cause.