[Bug 251027] New: kompare: changing tab width and applying the change does not apply the change

[esigra at gmail.com]

https://bugs.kde.org/show_bug.cgi?id=251027

           Summary: kompare: changing tab width and applying the change
                    does not apply the change
           Product: kompare
           Version: 4.0.0
          Platform: Gentoo Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: viewpart
        AssignedTo: kompare-devel at kde.org
        ReportedBy: esigra at gmail.com


Version:           4.0.0 (using KDE 4.5.1) 
OS:                Linux

When the tab width is changed (in the configuredialog) and the change is
applied (by pressing Apply and keeping the dialog open), the change does not
take effect.

Reproducible: Always

Steps to Reproduce:
1. Start Konsole.
2. Create a directory and cd into it.
3. Create the empty file empty.cc
4. Create the file prov.cc with some content like this:
float calculate_something(float const a, float const b, float const c) {
   return
      calculate_something(1.7, calculate_something(8.9, 19.51, 33.0), a) +
      calculate_something(c, 18.8, calculate_something(7.5, b, a));
}
5. Execute "diff -u empty.cc prov.cc|kompare -".
6. Open the settings dialog and change the tab width to 8 (or 4 if it was 8
before).
7. Press Apply.

Actual Results:  
Nothing changes (not even when forcing a redraw by switching to another program
and switching back to Kompare).

Expected Results:  
The change of tab width is applied.

The change is applied if the configuredialog is closed (Ok or Cancel). It is
also applied if the font is changed and Apply is pressed afterwards.

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