Version: (using KDE KDE 3.3.0) Installed from: Debian testing/unstable Packages OS: Linux digit grouping is handy also for those who haven't set the thousands separator. A slightly darker background colour for more significant digits would look uninvasive. Setting a thousands separator is not an option for people who cut and paste between (non-kde) applications with different or unknown locale settings. While this wish is triggered by the kcalc application it might be more generally applicable for number input/output in kde. Kind of "Syntax highlighting" for numbers:) (This wish is related to but different from bug 56669)
I don't think it is a good idea to introduce a second background color, since this may messes up with different color schemes. Also I think you confuse the formatting of the number display with that what is actually copied, which should be always the number value. Example: 1000 1,0E+03 1.000 these have all the same value (1000), which should be copied. So different locale settings doesn't pose a problem.
Thank you for the bug report. As this report hasn't seen any changes in 5 years or more, we ask if you can please confirm that the issue still persists. If this bug is no longer persisting or relevant please change the status to resolved.
Created attachment 136511 [details] Euler number with digits grouped
Created attachment 136512 [details] Euler number as is (no digit grouping)
Thanks for revisiting this. Attached two files which should illustrate my proposal. I'm biased and prefer the grouped display:)