Re: Treat spaces as tabs only at the start of the line

On Monday, July 2, 2012 1:21:57 AM UTC-3, Ben Fritz wrote:
> On Sunday, July 1, 2012 1:12:05 PM UTC-5, Gerardo Marset wrote:
> >
> > Thanks for the suggestion, but how could I insert a BS in the line without returning the function?
>
> You can return the <BS>, that's not one of the things that break insert mode.
>
> :help ins-special-special gives the list of things that do.
>
> You should be able to use your current <C-R>= mapping, or an <expr> mapping, to return <BS> plus an appropriate number of spaces.

Hmm... yes, I guess I could do it, but determining the appropriate number of spaces seems to get quite complicated.
Vim seems to remove a single space if, between tab and space, space was the last key pressed in the current insert mode.
I would have to map space to set a variable (l:space_last_pressed or something) to true, and also map Esc and Tab to set it to false, then use the variable's value to know how many spaces to make up for.
A mess.

As I said, I guess I could do it, but isn't there another way? :/

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