[Libreoffice-ux-advise] [Bug 58434] Display gray background for non-breaking characters only when displaying non-printing characters

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=58434

--- Comment #17 from Harald Koester <harald.koester at mail.de> ---
Created attachment 112753
  --> https://bugs.freedesktop.org/attachment.cgi?id=112753&action=edit
More detailed information about these kind of special characters

Meanwhile I found the following sentence in the help: “Field Shadings: Shows or
hides field shadings in your document, including non-breaking spaces, custom
hyphens, indexes, and footnotes.” If the function will be changed also this
text has to be changed.

So it seems that it was intended to use the field shading also for formatting
marks and hence it would not be a bug in a narrower sense. But to my opinion it
is still rather mistakable. So I would appreciate if formatting marks would be
highlighted in a different way. 

In order to get an impression how the different non-printing characters and
formatting marks are treated, I examined the current behaviour and created a
list with the results. You can find this list inside a document which I will
attach to this bug report. My impression is, that there is no clear direction
how these special characters are treated. I think the list is not complete,
because there are special characters which are used in languages which I do not
know. In the list there are also some question marks where I did not know or
examine the behaviour. Feel free if you like to complete or enhance the list.

Hence the situation is a bit complicated, a more general approach should be
considered. Therefore some questions should be answered. In the attached
document I added a list with, what I think are the relevant questions together
with some more aspects.

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