CODEWITHSUNDEEP
vim
sfranky
sfranky

Reputation: 240

vim undo (delete) characters written by an imap!

in vim, is there a way i can delete a block of text written by a i(no)remap, or an iab? for example, say i have

inoremap xx \hat{x}

in my .vimrc file, I want to be able to delete \hat{x} with one-two keystrokes (but not ^w or dB .. I could have two consecutive iabs consisting of just text, so I need to be able to cut abababcdcdcd in the middle, if cdcdcd is an iab of, say, "cc")

any ideas?

Upvotes: 5

Views: 485

Answers (2)

sehe
sehe

Reputation: 392893

Finally a clean solution

inoremap xx ^Gu\hat{x}^Gu

(That's C-g there)

No more strange effects. You can even choose whether you want to isolate the undo item at both ends or just at the start (leave the trailing ^Gu if you don't mind the hat-x being undone together with what came after it)

Now the salvaging info I used was, finally, trivial: 

:he undo|/break/;+3p

Output:

To do the opposite, break a change into two undo blocks, in Insert mode use CTRL-G u. This is useful if you want an insert command to be undoable in parts. E.g., for each sentence. |i_CTRL-G_u|

Upvotes: 2

sidyll
sidyll

Reputation: 59277

As the undo undoes the last insert, I frequently place a <Esc>a in the beginning of my mappings.

For example:

inoremap xx <Esc>a\hat{x}

Makes you leave and came back to insert mode so the undo can work properly. If you mistyped it, you can undo correctly.

I know this can be ugly and non-sense, but works. I'd love to know if there is a better solution to "flush" the undo.

Upvotes: 1

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