First Tab stop in commit dialog diff view has wrong width

[slabstone]

Current behaviour

First Tab stop in commit dialog diff has width of 3 spaces, while consequent tabs have width of 4 spaces. This leads to lines not matching on whitespace width.
Also happens on lines not starting with Tabs (see screenshots).

Expected behaviour

All Tab stops must have the same width (which is at the moment fixed at 4 I guess).

Steps to reproduce

Create file, put some tabs in it, commit, change tabs to spaces, open commit dialog.

Screenshots

Text highlighted for width visualisation.

1. line starting with Tab
   
2. next Tab after first
   
3. also happens on lines not starting with Tab
   

Did this work in previous version of GitExtensions

I don't know.

Environment

• GitExtensions version: latest release
• GIT version: 2.23-ish
• OS version: Windows 7 SP1
• .NET version: a whole bunch of different versions

Diagnostics

[gerhardol]

Reproducing
The texteditor (same control) do not have this problem
One explanation is that tabstops is calculated from the first column, that has the +/- in the diff view

[mstv]

For me it is a "beature". Sorry, I don't want to start a flame war. But luckily, all projects I am involved in, deprecate tabs. This behavior of GE helps me to detect that somebody has not configured their editor correctly (in both directions, i.e. either tabs or spaces) -- without turning on the distracting display of nonprinting characters. That was inspiry: I will not need this "beature" anymore if I setup according hooks.