https://bugs.documentfoundation.org/show_bug.cgi?id=161303
--- Comment #14 from Hossein <[email protected]> --- > $ pango-view --font="Noto Sans Arabic 256" --rtl --markup --text '-<span > color="red">ِ</span>.|' > I suspect that the direction is calculated incorrectly. If you try the above command without --rtl, the result is different, and the color is applied correctly. $ pango-view --font="Noto Sans Arabic 256" --markup --text '-<span color="red">ِ</span>.|' This is related to the base direction of text. From the pango-view man page: --rtl Set base direction to right-to-left Using fribidi utility, I get these outputs. Please note that the display here is a little different, so you have to run it in terminal: $ fribidi -ِ ب ب -ِ -ِ -ِ $ fribidi --rtl -ِ -ِ-- ِ Therefore, forcing base direction to RTL when user sets the RTL direction for the paragraph should fix the issue. The reason that HarfBuzz hb-view utility (or the library itself) ignores --rtl in this case is unclear to me. This option works with some other cases: For examples, the output of these two commands are different: $ ./util/hb-view --direction=rtl /usr/share/fonts/truetype/dejavu/DejaVuSans.ttf "a ب" $ ./util/hb-view --direction=ltr /usr/share/fonts/truetype/dejavu/DejaVuSans.ttf "a ب" This may also help in debugging: $ fribidi --levels ِ ِ 0 -ِ -ِ 0 0 $ fribidi --rtl --levels 1 -ِ -ِ 1 1 It is worth mentioning that according to tdf#155470, in LibreOffice there are limitations in embedding directions, for example LTR inside RTL, and things like that. -- You are receiving this mail because: You are the assignee for the bug.
