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optional two spaces #86

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d5a8fcb
optional two spaces
zwhitchcox Sep 29, 2016
8de3e08
instructions for auto-formatting upon save
zwhitchcox Sep 29, 2016
366d65f
fix error with unspecified option
zwhitchcox Sep 29, 2016
5c9abe9
make silent
zwhitchcox Sep 29, 2016
ea26990
Merge branch 'master' of https://github.com/ElmCast/elm-vim
zwhitchcox Oct 1, 2016
ca52505
Merge branch 'master' of https://github.com/ElmCast/elm-vim
zwhitchcox Oct 1, 2016
aca409e
use sed
zwhitchcox Oct 5, 2016
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9 changes: 9 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -69,6 +69,14 @@ let g:elm_setup_keybindings = 0

## Integration

### Automatically Format Upon Save

To automatically format your code before a save, add the following to your `.vimrc`

```vim
au BufWritePre *.elm call elm#Format()
```

### [Syntastic](https://github.com/scrooloose/syntastic)

Syntastic support should work out of the box, but we recommend the following settings:
Expand Down Expand Up @@ -113,6 +121,7 @@ let g:elm_detailed_complete = 0
let g:elm_format_autosave = 0
let g:elm_format_fail_silently = 0
let g:elm_setup_keybindings = 1
let g:elm_format_two_spaces = 1
```

* `:ElmMake [filename]` calls `elm-make` with the given file. If no file is given it uses the current file being edited.
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4 changes: 4 additions & 0 deletions autoload/elm.vim
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Expand Up @@ -54,13 +54,17 @@ fun! elm#Format()
" call elm-format on the temporary file
let out = system("elm-format " . l:tmpname . " --output " . l:tmpname)


" if there is no error
if v:shell_error == 0
try | silent undojoin | catch | endtry

" replace current file with temp file, then reload buffer
let old_fileformat = &fileformat
call rename(l:tmpname, expand('%'))
if get(g:, "elm_format_two_spaces", 0) == 1
call system("sed -e 's/^/~/' -e ': r' -e 's/^\\( *\\)~ /\\1 ~/' -e 't r' -e 's/~//' -i " . expand('%'))
endif
silent edit!
let &fileformat = old_fileformat
let &syntax = &syntax
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