#900 Allow configurable diff-style colours in fuzzy matching

[Masao Kasuya]

Although the "diff-style" fuzzy matching is very helpful, strike-through lines shown in black are sometimes invisible when they overlap characters. Showing strike-through lines in red would improve their visibility. If there is any technical difficulty in showing strike-through lines and characters in different colors, showing both in red, rather than black, would be better for improved distinction.

[Roman Mironov]

I agree, red and green were the colors used by Aaron when he created this function.
http://groups.yahoo.com/neo/groups/OmegaT/conversations/topics/27002

Here is what Jean-Christophe Helary replied about this:
> Hi guys,
>
> Based on this thread, I expected that diff will highlight deletions and insertions with red and green respectively, but I get black and blue instead. Is this normal?

Yes it is.

We considered that the red/green pattern was not consistent with the black/blue/green pattern that was used in matches so we adapted the colors to something that would not confuse users at first.

[Masao Kasuya]

Thanks for the support and historic background, Roman. Kanji characters often have horizontal lines making strike-through lines hard to recognize. So it's not just a matter of color preference, IMHO.

[Didier Briel]

For the reasons listed above, the traditional diff colours are not user-friendly for people using both the standard display and the diff one.

To be able to satisfy everyone, it would be better to be able to configure the diff colours.

I have changed the title accordingly.

Didier

[Didier Briel]

This is implemented in SVN (/trunk).

Didier

[Didier Briel]

Implemented in the released version 3.1.8 of OmegaT.

Didier