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Print error message if livedown executable can't be found #35

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Print error message if livedown executable can't be found #35

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29 changes: 23 additions & 6 deletions plugin/livedown.vim
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Original file line number Diff line number Diff line change
Expand Up @@ -14,13 +14,24 @@ if !exists('g:livedown_port')
let g:livedown_port = 1337
endif

if !exists('g:livedown_command')
" Check if livedown is available globally
let g:livedown_command = 'livedown'
if !executable(g:livedown_command)
" Lastly, try local livedown installation relative to plugin
let g:livedown_command = expand('<sfile>:h') . '/../node_modules/.bin/livedown'
function SetLivedownCommandGlobalVariable()
let l:global_livedown = 'livedown'
let l:local_livedown_legacy = expand('<sfile>:h') . '/../node_modules/.bin/livedown'
let l:local_livedown_modern = expand('<sfile>:h') . '/../node_modules/bin/livedown'

if executable(l:global_livedown)
let g:livedown_command = l:global_livedown
elseif executable(l:local_livedown_legacy)
let g:livedown_command = l:local_livedown_legacy
elseif executable(l:local_livedown_modern)
let g:livedown_command = l:local_livedown_modern
else
let g:livedown_command = ''
endif
endfunction

if !exists('g:livedown_command')
call SetLivedownCommandGlobalVariable()
endif

function! s:LivedownBrowser()
Expand All @@ -34,6 +45,12 @@ function! s:LivedownBrowser()
endfunction

function! s:LivedownRun(command)
if (g:livedown_command == '')
echoerr 'Unable to find livedown executable.
\ You can install it using: npm install -g livedown'
return 0
endif

let l:platform_command = has('win32') ?
\ "start /B " . a:command :
\ a:command . " &"
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