Add nimcheck end_col options

nimcheck

ale_linters/nim/nimcheck.vim

@@ -1,6 +1,15 @@
 " Author: Baabelfish
 " Description: Typechecking for nim files
 
+let s:end_col_patterns = [
+\   '\v''([^'']+)'' is declared but not used.*',
+\   '\videntifier expected, but found ''([^'']+)''',
+\   '\vimported and not used: ''([^'']+)''.*',
+\   '\vundeclared identifier: ''([^'']+)''',
+\   '\v''([^'']+)'' cannot be assigned to',
+\   '\vredefinition of ''([^'']+)'';',
+\]
+
 function! ale_linters#nim#nimcheck#Handle(buffer, lines) abort
     let l:buffer_filename = fnamemodify(bufname(a:buffer), ':p:t')
     let l:pattern = '^\(.\+\.nim\)(\(\d\+\), \(\d\+\)) \(.\+\)'
@@ -43,6 +52,11 @@ function! ale_linters#nim#nimcheck#Handle(buffer, lines) abort
             let l:item.code = l:code_match[2]
         endif
 
+        " Find position end_col.
+        for l:col_match in ale#util#GetMatches(l:item.text, s:end_col_patterns)
+            let l:item.end_col = l:item.col + len(l:col_match[1]) - 1
+        endfor
+
         call add(l:output, l:item)
     endfor