#2442 Nicer line break and tab characters for "show all characters"

Next_Release
open
nobody
None
5
2014-05-15
2014-05-15
0xdeadbeef
No

While the current implementation using "(CR)(LF)" is functionally ok, it is also extremely ugly. The display of tabs is not quite as ugly, but still not really pretty.
You can't really keep the "show all characters" enabled because especially the line breaks are so distracting.
I really like how UltraEdit handles the display of these non-printable characters: nice characters in a light grey.
-> Please improve the display of line breaks (and tabs) or implement an option to switch between the current distracting style and one you can keep enabled all the time.

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