bug#15273: 24.3.50; Combining character sequences are displayed weirdly

[Jan Djärv]

Hello.

5 sep 2013 kl. 16:08 skrev Xue Fuqiao <xfq.free@gmail.com>:

To reproduce:

 emacs -Q
 !                      ;; input an exclamation mark (#x21)
 C-x 8 RET 2 0 E 4 RET  ;; COMBINING ENCLOSING UPWARD POINTING TRIANGLE
 RET                    ;; Newline
 C-x 8 2 6 A 0 RET      ;; WARNING SIGN

I assume you mean C-x 8 RET 2 6 A 0 RET.

I tried many fonts, but all results look weird (the first line is
incomplete and too large).

(I haven't tried it on other platforms yet, so I'm not sure whether it's
NS-port specific.)

On Fedora 19, the first does not combine, I just get ! followed by an upward pointing triangle.

The second is very small, see screen shot.

The NS one looks better, but when moving the cursor over the first row, it redraws funny.  And metrics are off, the distance between the first triangle and the aaa to the right is actually only one space.  The aaa to the left is also followed by a space, but there the distance is too short, and the source of the redraw error.

W32 anyone?

Jan D.

Jan D.