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" gs will create a substitution command to replace the last yanked string with
" the last inserted string over a motion.
"
" This is useful when renaming a variable for example, one can place the cursor
" over the varibale to rename and type:
"
" ciwnew_variable_name<esc>gsiB
"
" and this will replace that variable name with 'new_variable_name' inside the
" Body.
noremap <silent> gs :set operatorfunc=<SID>do_subst_enter<cr>g@
vnoremap <silent> gs :call <SID>v_do_subst_enter()<cr>
" gS is like gs, except it:
"
" * doesn't feed a newline at the end
" * doesn't wrap the string to substitue in word boundaries.
noremap <silent> gS :set operatorfunc=<SID>do_subst_no_enter<cr>g@
vnoremap <silent> gS :call <SID>v_do_subst_no_enter()<cr>
" Hotkey for replacing the most recently searched matches.
noremap <C-s> <esc>:<C-u>%s//
let s:entered_with_change = v:false
let s:entered_with_append = v:false
let s:old_word=''
let s:new_word=''
let s:override_word = ''
function! OverrideChange()
let s:entered_with_change = v:true
let s:override_word = expand('<cword>')
return ''
endfunction
function! s:save_register_on_change()
endfunction
function! s:save_old_word() abort
if s:entered_with_change
let s:old_word = s:override_word
else
let s:old_word = expand("<cword>")
endif
endfunction
function! s:save_new_word() abort
if s:entered_with_change
let s:entered_with_change = v:false
let s:new_word = expand("<cword>")
else
let s:new_word = expand("<cword>")
endif
endfunction
augroup FieldMarshalSubstitute
au!
autocmd InsertEnter * call s:save_old_word()
autocmd InsertLeave * call s:save_new_word()
augroup END
noremap <expr> c OverrideChange() . 'c'
noremap <expr> s OverrideChange() . 's'
noremap <expr> a OverrideChange() . 'a'
function! s:do_subst_enter(...) abort
call s:do_subst_priv("'[", "']", v:true)
endfunction
function! s:do_subst_no_enter(...) abort
call s:do_subst_priv("'[", "']", v:false)
endfunction
function! s:v_do_subst_enter(...) abort
call s:do_subst_priv("'<", "'>", v:true)
endfunction
function! s:v_do_subst_no_enter(...) abort
call s:do_subst_priv("'<", "'>", v:false)
endfunction
function! s:do_subst_priv(m0, m1, do_enter) abort
let [_, lnum0, _, _] = getpos(a:m0)
let [_, lnum1, _, _] = getpos(a:m1)
" Need to call feedkeys() because @. may contain special characters like
" backspace.
call feedkeys(
\ printf(
\ ":%s %d,%d s/\\V%s%s%s/%s/g%s",
\ a:do_enter ? "silent!" : "",
\ lnum0,
\ lnum1,
\ a:do_enter ? "\\<" : "",
\ escape(s:old_word, '/\'),
\ a:do_enter ? "\\>" : "",
\ escape(s:new_word, '/\'),
\ a:do_enter ? "\n" : ""))
endfunction
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