map - Key repeats and ranges in Vim mappings -

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i want define mapping in .gvimrc such if last key pressed held, triggered action repeated. specifically, want like

map <space>t :set transparency-=1 map <space>t :set transparency+=1

for macvim, want transparency continue decreased/increased when t/t held (don't want have keep pressing spacebar).

if have suggestion nicer way adjust transparency, appreciate also.

separately, nice able able type 20 space t , have transparency decreased 20; however, when try an

e481: no range allowed.

how enable range specification?

thanks lot.

i not sure first part of question, 20 <space> t able job:

:map <space>t :<c-u>exe "set transparency-=".v:count1<cr>
  • with <c-u> remove line range added ex command when type 20 in normal mode.
  • with exe execute 'dynamic' vimscript.
  • v:count1 count given last normal mode command (20 in example). , if there no count given defaults 1.

for additional information see

:h v:count :h v:count1

update:

you can omit exe using let form instead of set one:

:map <space>t :<c-u>let &transparency-=v:count1<cr>

see :h :let-&.


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