Fix for trailing CR character with omni completion.

This issue manifests on Windows OS, because CRLF is used here for end of
line and systemlist() function splits lines on LF cahracter.
system() function takes care of OS specific end of line chars.

autoload/ledger.vim

@@ -671,7 +671,7 @@ endf
 " Use current line as input to ledger entry and replace with output. If there
 " are errors, they are echoed instead.
 function! ledger#entry() abort
-  let l:output = systemlist(s:ledger_cmd(g:ledger_main, join(['entry', getline('.')])))
+  let l:output = split(system(s:ledger_cmd(g:ledger_main, join(['entry', getline('.')]))), '\n')
   " Filter out warnings
   let l:output = filter(l:output, "v:val !~? '^Warning: '")
   " Errors may occur
@@ -695,7 +695,7 @@ endfunc
 " Returns:
 " Ledger's output as a String.
 function! ledger#report(file, args) abort
-  let l:output = systemlist(s:ledger_cmd(a:file, a:args))
+  let l:output = split(system(s:ledger_cmd(a:file, a:args)), '\n')
   if v:shell_error  " If there are errors, show them in a quickfix/location list.
     call s:quickfix_populate(l:output)
     call s:quickfix_toggle('Errors', 'Unable to parse errors')
@@ -742,7 +742,7 @@ function! ledger#register(file, args) abort
         \ "--prepend-format='%(filename):%(beg_line) '",
         \ a:args
         \ ]))
-  call s:quickfix_populate(systemlist(l:cmd))
+  call s:quickfix_populate(split(system(l:cmd), '\n'))
   call s:quickfix_toggle('Register report')
 endf
 
@@ -761,7 +761,7 @@ function! ledger#reconcile(file, account, target_amount) abort
         \ shellescape(a:account)
         \ ]))
   let l:file = expand(a:file) " Needed for #show_balance() later
-  call s:quickfix_populate(systemlist(l:cmd))
+  call s:quickfix_populate(split(system(l:cmd), '\n'))
   if s:quickfix_toggle('Reconcile ' . a:account, 'Nothing to reconcile')
     let g:ledger_target_amount = a:target_amount
     " Show updated account balance upon saving, as long as the quickfix window is open
@@ -805,7 +805,7 @@ function! ledger#show_balance(file, ...) abort
         \ "--format='%(scrub(get_at(display_total, 0)))|%(scrub(get_at(display_total, 1)))|%(quantity(scrub(get_at(display_total, 1))))'",
         \ (empty(g:ledger_default_commodity) ? '' : '-X ' . shellescape(g:ledger_default_commodity))
         \ ]))
-  let l:output = systemlist(l:cmd)
+  let l:output = split(system(l:cmd), '\n')
   " Errors may occur, for example,  when the account has multiple commodities
   " and g:ledger_default_commodity is empty.
   if v:shell_error

ftplugin/ledger.vim

@@ -400,12 +400,12 @@ function! s:collect_completion_data() "{{{1
   let transactions = ledger#transactions()
   let cache = {'descriptions': [], 'tags': {}, 'accounts': {}}
   if exists('g:ledger_accounts_cmd')
-    let accounts = systemlist(g:ledger_accounts_cmd)
+    let accounts = split(system(g:ledger_accounts_cmd), '\n')
   else
     let accounts = ledger#declared_accounts()
   endif
   if exists('g:ledger_descriptions_cmd')
-    let cache.descriptions = systemlist(g:ledger_descriptions_cmd)
+    let cache.descriptions = split(system(g:ledger_descriptions_cmd), '\n')
   endif
   for xact in transactions
     if !exists('g:ledger_descriptions_cmd')
@@ -494,10 +494,10 @@ endf "}}}
 
 function! s:autocomplete_account_or_payee(argLead, cmdLine, cursorPos) "{{{2
   return (a:argLead =~# '^@') ?
-        \ map(filter(systemlist(g:ledger_bin . ' -f ' . shellescape(expand(g:ledger_main)) . ' payees'),
+        \ map(filter(split(system(g:ledger_bin . ' -f ' . shellescape(expand(g:ledger_main)) . ' payees'), '\n'),
         \ "v:val =~? '" . strpart(a:argLead, 1) . "' && v:val !~? '^Warning: '"), '"@" . escape(v:val, " ")')
         \ :
-        \ map(filter(systemlist(g:ledger_bin . ' -f ' . shellescape(expand(g:ledger_main)) . ' accounts'),
+        \ map(filter(split(system(g:ledger_bin . ' -f ' . shellescape(expand(g:ledger_main)) . ' accounts'), '\n'),
         \ "v:val =~? '" . a:argLead . "' && v:val !~? '^Warning: '"), 'escape(v:val, " ")')
 endf "}}}