@Hongyi Zhao: As you wrote in the duplicate bug, my simplistic code in
comment #2, which only escapes the '<' character, would not be
sufficient. At the same time the issue I mentioned, about --no-markup
making \n being displayed literally instead of interpreted as a newline,
still stands.
Probably this variant would do it:
TEXT=$(printf '%s' "$TEXT" | sed 's/&/\&/g;
s/</\</g;
s/>/\>/g;
s/"/\"/g;
s/'"'"'/\'/g')
But before making the change, I would appreciate some feedback from you
or others that that addition to /etc/gdm3/config-error-dialog.sh would
address the issues you have observed.
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https://bugs.launchpad.net/bugs/1887252
Title:
config-error-dialog.sh should pass --no-markup
Status in gdm3 package in Ubuntu:
Incomplete
Status in lightdm package in Ubuntu:
Incomplete
Bug description:
I modified my ~/.profile to call "logger". This resulted in in
producing some output on stderr like
```
<13>Jul 11 13:02:46 /usr/sbin/lightdm-session[1408]: profile sourced ...
```
This showed an empty zenity prompt.
Logs suggest zenity was failing because it was treating `<13>` as
pango markup.
```
from markup due to error parsing markup: Error on line 3 char 6: “13” is not
a valid
```
We should not assume the error message strings contain valid markup,
since their source is unknown.
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