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bug#16395: Tab-containing lines displayed with different background?

From: Jan Djärv
Subject: bug#16395: Tab-containing lines displayed with different background?
Date: Fri, 10 Jan 2014 14:36:10 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0


I simply can not reproduce this on any machine with any Linux distribution/Gtk+ version that I have. You have to debug this yourself.

Colors are loaded in xfaces.c, load_color2.
For Gtk+ the background is also set in gtkutil.c, xg_set_widget_bg.

I suggest you do some tracing there and see what the difference is.

        Jan D.

2014-01-09 17:48, Jarosław Rzeszótko skrev:
By the way, this happens with any background color, not just this
particular one.

Jarosław Rzeszótko

2014/1/9 Jarosław Rzeszótko <address@hidden>:

It's #141414 vs #151515, might not be easy to notice depending on
display/brightness/contrast/..., but you can zoom in and probe with
Gimp or something and you will see that, for example, the first line
has a #141414 background, and the second one with the hard tabs a
#151515. It's pretty strange because there don't seem to be any
overlays or anything of this kind.

Jarosław Rzeszótko

2014/1/9 Eli Zaretskii <address@hidden>:
Date: Thu, 9 Jan 2014 14:53:08 +0100
From: Jarosław Rzeszótko <address@hidden>
Cc: address@hidden

1. I start emacs with "emacs -Q"

2. I open up M-x customize-face[RET] default[RET]

3. I set the background to #151515, foreground to #ffffff, and "click" "Apply"

4. M-x find-file[RET] ~/text.bar[RET]

5. I insert into the file some combination of empty lines, lines
containing text, and lines containing hard tabs and text.

6. The result can be seen in the screenshot attached.

Sorry, but I see only one background color on the image, not two.  All
the lines of text and empty lines have the same background.  Am I
missing something?

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