pepegnu schrieb:
> You're quite right, though diw does the job
>
> * only for spaces and tabs, but does not trim, i.e. it leaves
> the words glued together, e.g.,
>
> textbefore_____<cursor>______textafter -->
> textbeforetextafter
>
> which requires typing an aditional space
You can use dviw instead. This will leave the last character of the
whitespace sequence (can be a Tab - type "r " to turn it into a Space).
:h o_v
> * Does not trim vertical whitespace (newlines)
You can use dvip instead. If this leaves a blank line (instead of an
empty line), you can type 0D to make it empty.
> What i had in mind was approximately that
>
> * di_ is the same as diw + additional space, e.g.
>
> textbefore_____<cursor>______textafter --> textbefore
> textafter
See dviw above.
> * while da_ trims also vertical whitespace (if present), e.g.,
>
> _______textbefore______
> ____\n
> ______ \n
> <cursor>
> ___\n
> ___\n
> _______textafter --> textbefore textafter
This is not how text objects work. You can select text, but not edit
text. If the selection between "textbefore" and "textafter" doesn't
contain a Space, there is no way to make "da_" leave a Space afterwards.
> If there is not vertical whitespace, da_ should double the
> functionality of di_.
---------------------------------------------------------------------
The following mapping trims whitespace around the cursor, leaving one
Space or one empty line.
This has been for a long time in my vimrc (note the many bug fixes) ...
nn <silent> drw :<C-U>call DeleteRubbishWhitespace()<CR>
func! DeleteRubbishWhitespace()
" Former "delete reduced word" (a word but one character); but, only
" useful to reduce many SPACES or BLANK LINES to one, as it works
" now. This is a safe command, it does not delete real text!
" BF: now works if some of the blank lines are within a folded area
" BF: now keeps the buffer unmodified if there is no actual change
" BF: does no longer unwanted scrolling
" NF: repeatable with "." (Vimscript #2136)
" BF: didn't work with 've=all'
" BF: '] is bad when no change was made
let savopt = [&ve]
set virtualedit=
let line = getline(".")
if line =~ '^\s*$'
let sav_pos = winsaveview()
let sav_fen = &fen
setlocal nofoldenable
normal! dvip0D
let sav_pos.lnum = line(".")
let &l:fen = sav_fen
call winrestview(sav_pos)
elseif line[col(".")-1] =~ '\s'
normal! zvyiw
if @@ != " "
normal! dviwr m[
" m[ is just to avoid a trailing space
endif
endif
let [&ve] = savopt
silent! call repeat#set("drw")
endfunc
--
Andy
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