I need some help trying to clean up this tip:
http://vim.wikia.com/wiki/Super_Retab
The tip offers several solutions to the following problem (in the
following, each '.' represents a space, and '|-------' represents a
tab):
Visually select the following:
..for {
....that;
..}
If you enter command ':call SuperRetab(2)' the text changes to:
|-------for {
|-------|-------that;
|-------}
Version 2 of SuperRetab is:
function! SuperRetab(width) range
let x = 0
while x < 10
exe a:firstline . ',' . a:lastline . 's/^\(~[ ]*\)~[ ]\{' .
\ a:width . '}/\1\t\2/e'
let x = x + 1
endwhile
endfunction
If we assume firstline = 11, lastline = 19 and width == 2, the function
executes the following 10 times:
11,19s/^\(~[ ]*\)~[ ]\{2}/\1\t\2/e
Can someone please decode this for me? What is the tilde doing (match
last substitute?)? Is it a mistake?? Why is there a \1 and \2, yet I can
only see one grouping?
I'd also like ideas for what to do with the tip!
John
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