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Add a filter function for g= #51

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Add a filter function for g= #51

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10 changes: 9 additions & 1 deletion autoload/scriptease.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -225,6 +225,10 @@ function! s:opfunc(t) abort
return @@
endfunction

function! s:noop(...)
return a:1
endf

function! scriptease#filterop(...) abort
if !a:0
set opfunc=scriptease#filterop
Expand All @@ -234,7 +238,11 @@ function! scriptease#filterop(...) abort
try
set selection=inclusive clipboard-=unnamed clipboard-=unnamedplus
let expr = s:opfunc(a:1)
let @@ = matchstr(expr, '^\_s\+').scriptease#dump(eval(s:gsub(expr,'\n%(\s*\\)=',''))).matchstr(expr, '\_s\+$')
let code = s:function(get(g:, 'scriptease_prefilter', 's:noop'))(expr)
let filter_modified = code != expr
let code = s:gsub(code,'\n%(\s*\\)=','')
let @@ = matchstr(expr, '^\_s\+').scriptease#dump(eval(code)).matchstr(expr, '\_s\+$')
let @@ = s:function(get(g:, 'scriptease_postfilter', 's:noop'))(@@, filter_modified, expr)
if @@ !~# '^\n*$'
normal! gvp
endif
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20 changes: 20 additions & 0 deletions doc/scriptease.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,26 @@ g== replace it with the result. If you press g== on a
{Visual}g= Call |eval()| on the selection and replace it with the
result.

*g:scriptease_prefilter*
*g:scriptease_postfilter*
Define these filter functions to modify selection before it's passed to
|eval()| so you can convert your expressions to vim-compatible ones.
>
function! StripFloatSuffix_Pre(input)
" Strip out f float suffixes.
return substitute(a:input, '\v\C(\d)f>', '\1', 'g')
endf
function! StripFloatSuffix_Post(expr, filter_modified, input)
if a:filter_modified
" We had f suffixes, so restore them.
return substitute(a:expr, '\v\C([0-9.]+)>', '\1f', 'g')
endif
return a:expr
endf
let g:scriptease_prefilter = 'StripFloatSuffix_Pre'
let g:scriptease_postfilter = 'StripFloatSuffix_Post'
<

*scriptease-g!*
g! Old alias for |g=|.

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