[konsole] [Bug 371687] Unicode characters appear cut off and mess up text height for rest of line

Egmont Koblinger bugzilla_noreply at kde.org
Thu Oct 27 21:13:19 UTC 2016


Egmont Koblinger <egmont at gmail.com> changed:

           What    |Removed                     |Added
                 CC|                            |egmont at gmail.com

--- Comment #8 from Egmont Koblinger <egmont at gmail.com> ---
Such overflows do happen in gnome-terminal (vte). It's not fully thought/worked
out there, I guess it's rather accidental than by design, but it works most of
the time. E.g. you can see drawing glitches when you highlight either the text
line or the Unicode line with your mouse. It's also imperfect in some cases
with plain English text, e.g. see
https://bugzilla.gnome.org/show_bug.cgi?id=734740 which I spent a couple of
hours on, but could not understand what was going on.

The background is painted on the cell according to the strict grid, not on the
area actually covered by the glyph. It seems to me now that the backgrounds are
all painted before the foregrounds, that's why you can see the foreground
overflowing but not the background.

One thing that vte never does (while apparently konsole does) is moving a glyph
somewhere away from its desired location because of other oversized glyps.

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