Add ... at start instead of end of trimmed formatted text

[utabe]

Add support for issue Long names 909.

[utabe]

@jonathanslenders what would need to be added to this in order for it to mergeable?

[mlucool]

@jonathanslenders Any objection to this request?

[mlucool]

@jonathanslenders just wanted to reach out again to see your thoughts on this

[ngoldbaum]

@jonathanslenders any chance this one can get some code review?

[asmeurer]

I just tested this and it works. It makes more sense for ... to go at the beginning because the beginning of the completion is already there in the text that was typed.

[jonathanslenders]

Thanks for this! (And thanks for the patience, it's been super busy.)

I think usually it does make sense indeed, but not always. There are situations where we have to complete long filenames with many pieces in common, where nothing was typed yet. for instance:

____________a__________1_________
____________a__________2_________
____________b__________1_________
____________b__________2_________
etc...

People type this by tabbing the common pieces and typing the things that are different. If we truncate on the left, this won't work anymore. So, this will break some people's workflow.

I'll see if it's feasible to have dots on the left if the start of the completion was already typed. If too difficult, I should probably merge this.

[asmeurer]

Another option might be to show both the part right after what is typed as well as the end, and have the ellipses in the middle. I don't know how hard that is to do.

[jonathanslenders]

Related issue: #909