Copy all loclist items returned from handlers, and set up defaults for convenience

51 files changed, 185 insertions, 134 deletions

diff --git a/ale_linters/chef/foodcritic.vim b/ale_linters/chef/foodcritic.vim
index 0728a37e..44ab5681 100644
--- a/ale_linters/chef/foodcritic.vim
+++ b/ale_linters/chef/foodcritic.vim
@@ -21,11 +21,9 @@ function! ale_linters#chef#foodcritic#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[3] + 0,
-        \   'vcol': 0,
         \   'col': 0,
         \   'text': l:text,
         \   'type': 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/coffee/coffeelint.vim b/ale_linters/coffee/coffeelint.vim
index 8b1c713e..a7960b98 100644
--- a/ale_linters/coffee/coffeelint.vim
+++ b/ale_linters/coffee/coffeelint.vim
@@ -40,11 +40,9 @@ function! ale_linters#coffee#coffeelint#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': l:column,
         \   'text': l:text,
         \   'type': l:type,
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/cs/mcs.vim b/ale_linters/cs/mcs.vim
index 3d39cfb7..f1e1fc87 100644
--- a/ale_linters/cs/mcs.vim
+++ b/ale_linters/cs/mcs.vim
@@ -21,11 +21,9 @@ function! ale_linters#cs#mcs#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': l:match[2] + 0,
         \   'text': l:match[3] . ': ' . l:match[4],
         \   'type': l:match[3] =~# '^error' ? 'E' : 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/d/dmd.vim b/ale_linters/d/dmd.vim
index 26e80145..bf3d3d38 100644
--- a/ale_linters/d/dmd.vim
+++ b/ale_linters/d/dmd.vim
@@ -72,11 +72,9 @@ function! ale_linters#d#dmd#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': bufnr('%'),
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': l:column,
         \   'text': l:text,
         \   'type': l:type ==# 'Warning' ? 'W' : 'E',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/dockerfile/hadolint.vim b/ale_linters/dockerfile/hadolint.vim
index dc8e642c..f82cb8a1 100644
--- a/ale_linters/dockerfile/hadolint.vim
+++ b/ale_linters/dockerfile/hadolint.vim
@@ -27,7 +27,6 @@ function! ale_linters#dockerfile#hadolint#Handle(buffer, lines) abort
     call add(l:output, {
     \   'bufnr': a:buffer,
     \   'lnum': l:lnum,
-    \   'vcol': 0,
     \   'col': 0,
     \   'type': l:type,
     \   'text': l:text,
diff --git a/ale_linters/elixir/credo.vim b/ale_linters/elixir/credo.vim
index 6bf3835d..8ce12427 100644
--- a/ale_linters/elixir/credo.vim
+++ b/ale_linters/elixir/credo.vim
@@ -27,11 +27,9 @@ function! ale_linters#elixir#credo#Handle(buffer, lines) abort
     call add(l:output, {
     \   'bufnr': a:buffer,
     \   'lnum': l:match[1] + 0,
-    \   'vcol': 0,
     \   'col': l:match[2] + 0,
     \   'type': l:type,
     \   'text': l:text,
-    \   'nr': -1,
     \})
   endfor
 
diff --git a/ale_linters/elm/make.vim b/ale_linters/elm/make.vim
index 714272c5..23297838 100644
--- a/ale_linters/elm/make.vim
+++ b/ale_linters/elm/make.vim
@@ -22,11 +22,9 @@ function! ale_linters#elm#make#Handle(buffer, lines) abort
                     call add(l:output, {
                     \    'bufnr': a:buffer,
                     \    'lnum': l:error.region.start.line,
-                    \    'vcol': 0,
                     \    'col': l:error.region.start.column,
                     \    'type': (l:error.type ==? 'error') ? 'E' : 'W',
                     \    'text': l:error.overview,
-                    \    'nr': -1,
                     \})
                 endif
             endfor
diff --git a/ale_linters/erlang/erlc.vim b/ale_linters/erlang/erlc.vim
index 571592fb..8433d9a1 100644
--- a/ale_linters/erlang/erlc.vim
+++ b/ale_linters/erlang/erlc.vim
@@ -43,11 +43,9 @@ function! ale_linters#erlang#erlc#Handle(buffer, lines) abort
             call add(l:output, {
             \   'bufnr': a:buffer,
             \   'lnum': 0,
-            \   'vcol': 0,
             \   'col': 0,
             \   'type': 'E',
             \   'text': l:match_parse_transform[0],
-            \   'nr': -1,
             \})
 
             continue
@@ -77,11 +75,9 @@ function! ale_linters#erlang#erlc#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': 0,
         \   'type': l:type,
         \   'text': l:text,
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/fortran/gcc.vim b/ale_linters/fortran/gcc.vim
index 8d15cc00..6d3f495c 100644
--- a/ale_linters/fortran/gcc.vim
+++ b/ale_linters/fortran/gcc.vim
@@ -41,9 +41,7 @@ function! ale_linters#fortran#gcc#Handle(buffer, lines) abort
             let l:last_loclist_obj = {
             \   'bufnr': a:buffer,
             \   'lnum': l:match[1] + 0,
-            \   'vcol': 0,
             \   'col': l:match[2] + 0,
-            \   'nr': -1,
             \}
 
             " Start looking for the message and error type.
diff --git a/ale_linters/go/gobuild.vim b/ale_linters/go/gobuild.vim
index 832669f2..e6ca9f97 100644
--- a/ale_linters/go/gobuild.vim
+++ b/ale_linters/go/gobuild.vim
@@ -190,11 +190,9 @@ function! ale_linters#go#gobuild#Handler(buffer, lines) abort
     call add(l:output, {
     \   'bufnr': l:buffer,
     \   'lnum': l:match[2] + 0,
-    \   'vcol': 0,
     \   'col': l:match[3] + 0,
     \   'text': l:match[4],
     \   'type': 'E',
-    \   'nr': -1,
     \})
   endfor
 
diff --git a/ale_linters/haskell/hlint.vim b/ale_linters/haskell/hlint.vim
index 5b870e3d..6a907ab9 100644
--- a/ale_linters/haskell/hlint.vim
+++ b/ale_linters/haskell/hlint.vim
@@ -11,7 +11,6 @@ function! ale_linters#haskell#hlint#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:error.startLine + 0,
-        \   'vcol': 0,
         \   'col': l:error.startColumn + 0,
         \   'text': l:error.severity . ': ' . l:error.hint . '. Found: ' . l:error.from . ' Why not: ' . l:error.to,
         \   'type': l:error.severity ==# 'Error' ? 'E' : 'W',
diff --git a/ale_linters/html/tidy.vim b/ale_linters/html/tidy.vim
index 53520347..de873c86 100644
--- a/ale_linters/html/tidy.vim
+++ b/ale_linters/html/tidy.vim
@@ -53,11 +53,9 @@ function! ale_linters#html#tidy#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': l:col,
         \   'text': l:text,
         \   'type': l:type,
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/java/javac.vim b/ale_linters/java/javac.vim
index af2dbc96..5652d9d3 100644
--- a/ale_linters/java/javac.vim
+++ b/ale_linters/java/javac.vim
@@ -34,11 +34,9 @@ function! ale_linters#java#javac#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': 1,
         \   'text': l:match[2] . ':' . l:match[3],
         \   'type': l:match[2] ==# 'error' ? 'E' : 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/javascript/eslint.vim b/ale_linters/javascript/eslint.vim
index c2794ec8..baca3dd2 100644
--- a/ale_linters/javascript/eslint.vim
+++ b/ale_linters/javascript/eslint.vim
@@ -65,11 +65,9 @@ function! ale_linters#javascript#eslint#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': l:match[2] + 0,
         \   'text': l:text,
         \   'type': l:type ==# 'Warning' ? 'W' : 'E',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/javascript/flow.vim b/ale_linters/javascript/flow.vim
index c1ee4b2d..98bda753 100644
--- a/ale_linters/javascript/flow.vim
+++ b/ale_linters/javascript/flow.vim
@@ -68,7 +68,6 @@ function! ale_linters#javascript#flow#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': l:col,
         \   'text': l:text,
         \   'type': l:error.level ==# 'error' ? 'E' : 'W',
diff --git a/ale_linters/javascript/standard.vim b/ale_linters/javascript/standard.vim
index 9dc2d205..1232b652 100644
--- a/ale_linters/javascript/standard.vim
+++ b/ale_linters/javascript/standard.vim
@@ -51,11 +51,9 @@ function! ale_linters#javascript#standard#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': l:match[2] + 0,
         \   'text': l:text,
         \   'type': 'E',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/json/jsonlint.vim b/ale_linters/json/jsonlint.vim
index 5af8f625..e1fb2bd5 100644
--- a/ale_linters/json/jsonlint.vim
+++ b/ale_linters/json/jsonlint.vim
@@ -18,11 +18,9 @@ function! ale_linters#json#jsonlint#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': l:match[2] + 0,
         \   'text': l:match[3],
         \   'type': 'E',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/lua/luacheck.vim b/ale_linters/lua/luacheck.vim
index ace464ce..c4c79b16 100644
--- a/ale_linters/lua/luacheck.vim
+++ b/ale_linters/lua/luacheck.vim
@@ -23,11 +23,9 @@ function! ale_linters#lua#luacheck#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': l:match[2] + 0,
         \   'text': l:match[4],
         \   'type': l:match[3],
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/markdown/mdl.vim b/ale_linters/markdown/mdl.vim
index c984252e..7e64304c 100644
--- a/ale_linters/markdown/mdl.vim
+++ b/ale_linters/markdown/mdl.vim
@@ -16,11 +16,9 @@ function! ale_linters#markdown#mdl#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': 0,
         \   'text': l:match[2],
         \   'type': 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/matlab/mlint.vim b/ale_linters/matlab/mlint.vim
index 8eb747ec..563cf19d 100644
--- a/ale_linters/matlab/mlint.vim
+++ b/ale_linters/matlab/mlint.vim
@@ -44,11 +44,9 @@ function! ale_linters#matlab#mlint#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:lnum,
-        \   'vcol': 0,
         \   'col': l:col,
         \   'text': l:text,
         \   'type': 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/perl/perl.vim b/ale_linters/perl/perl.vim
index 3724244e..4a4ea508 100644
--- a/ale_linters/perl/perl.vim
+++ b/ale_linters/perl/perl.vim
@@ -21,11 +21,9 @@ function! ale_linters#perl#perl#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': l:column,
         \   'text': l:text,
         \   'type': l:type,
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/perl/perlcritic.vim b/ale_linters/perl/perlcritic.vim
index dfad2d48..f146085d 100644
--- a/ale_linters/perl/perlcritic.vim
+++ b/ale_linters/perl/perlcritic.vim
@@ -21,11 +21,9 @@ function! ale_linters#perl#perlcritic#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': l:column,
         \   'text': l:text,
         \   'type': l:type,
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/php/hack.vim b/ale_linters/php/hack.vim
index 5c90247b..762486b4 100644
--- a/ale_linters/php/hack.vim
+++ b/ale_linters/php/hack.vim
@@ -19,7 +19,6 @@ function! ale_linters#php#hack#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[2] + 0,
-        \   'vcol': 0,
         \   'col': l:match[3] + 0,
         \   'text': l:match[5],
         \   'type': 'E',
diff --git a/ale_linters/php/php.vim b/ale_linters/php/php.vim
index d95e28a8..aa5229cf 100644
--- a/ale_linters/php/php.vim
+++ b/ale_linters/php/php.vim
@@ -20,11 +20,9 @@ function! ale_linters#php#php#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[3] + 0,
-        \   'vcol': 0,
         \   'col': empty(l:match[2]) ? 0 : stridx(getline(l:match[3]), l:match[2]) + 1,
         \   'text': l:match[1],
         \   'type': 'E',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/php/phpcs.vim b/ale_linters/php/phpcs.vim
index 4b3cabdf..2edd6ed5 100644
--- a/ale_linters/php/phpcs.vim
+++ b/ale_linters/php/phpcs.vim
@@ -33,11 +33,9 @@ function! ale_linters#php#phpcs#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': l:match[2] + 0,
         \   'text': l:text,
         \   'type': l:type ==# 'error' ? 'E' : 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/php/phpmd.vim b/ale_linters/php/phpmd.vim
index e7f87bc5..e172a6a1 100644
--- a/ale_linters/php/phpmd.vim
+++ b/ale_linters/php/phpmd.vim
@@ -22,11 +22,9 @@ function! ale_linters#php#phpmd#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': 0,
         \   'text': l:match[2],
         \   'type': 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/puppet/puppet.vim b/ale_linters/puppet/puppet.vim
index 175d059f..6561bf8e 100644
--- a/ale_linters/puppet/puppet.vim
+++ b/ale_linters/puppet/puppet.vim
@@ -18,11 +18,9 @@ function! ale_linters#puppet#puppet#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[2] + 0,
-        \   'vcol': 0,
         \   'col': l:match[3] + 0,
         \   'text': l:match[1],
         \   'type': 'E',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/python/mypy.vim b/ale_linters/python/mypy.vim
index 55ab9022..187bb83c 100644
--- a/ale_linters/python/mypy.vim
+++ b/ale_linters/python/mypy.vim
@@ -44,11 +44,9 @@ function! g:ale_linters#python#mypy#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': l:match[2] + 0,
         \   'text': l:match[4],
         \   'type': l:match[3] =~# 'error' ? 'E' : 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/ruby/rubocop.vim b/ale_linters/ruby/rubocop.vim
index 87fc7b79..7f6985de 100644
--- a/ale_linters/ruby/rubocop.vim
+++ b/ale_linters/ruby/rubocop.vim
@@ -23,11 +23,9 @@ function! ale_linters#ruby#rubocop#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': l:match[2] + 0,
         \   'text': l:text,
         \   'type': index(['C', 'E'], l:type) != -1 ? 'E' : 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/scala/scalac.vim b/ale_linters/scala/scalac.vim
index 6f462068..6cd4d249 100644
--- a/ale_linters/scala/scalac.vim
+++ b/ale_linters/scala/scalac.vim
@@ -33,11 +33,9 @@ function! ale_linters#scala#scalac#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': l:col + 1,
         \   'text': l:text,
         \   'type': l:type,
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/scss/scsslint.vim b/ale_linters/scss/scsslint.vim
index 1ee06622..d8aeef06 100644
--- a/ale_linters/scss/scsslint.vim
+++ b/ale_linters/scss/scsslint.vim
@@ -24,11 +24,9 @@ function! ale_linters#scss#scsslint#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': l:match[2] + 0,
         \   'text': l:match[4],
         \   'type': l:match[3] ==# 'E' ? 'E' : 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/sh/shell.vim b/ale_linters/sh/shell.vim
index 786cc0e6..c7365ae9 100644
--- a/ale_linters/sh/shell.vim
+++ b/ale_linters/sh/shell.vim
@@ -57,11 +57,9 @@ function! ale_linters#sh#shell#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': l:column,
         \   'text': l:text,
         \   'type': l:type,
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/sml/smlnj.vim b/ale_linters/sml/smlnj.vim
index 5e7f40a4..c75f89bb 100644
--- a/ale_linters/sml/smlnj.vim
+++ b/ale_linters/sml/smlnj.vim
@@ -23,11 +23,9 @@ function! ale_linters#sml#smlnj#Handle(buffer, lines) abort
         call add(l:out, {
         \   'bufnr': a:buffer,
         \   'lnum': l:match[1] + 0,
-        \   'vcol': 0,
         \   'col': 1,
         \   'text': l:match[2] . ': ' . l:match[3],
         \   'type': l:match[2] ==# 'error' ? 'E' : 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/tex/chktex.vim b/ale_linters/tex/chktex.vim
index 2d53c667..95fd2bad 100644
--- a/ale_linters/tex/chktex.vim
+++ b/ale_linters/tex/chktex.vim
@@ -44,11 +44,9 @@ function! ale_linters#tex#chktex#Handle(buffer, lines) abort
     call add(l:output, {
     \   'bufnr': a:buffer,
     \   'lnum': l:match[1] + 0,
-    \   'vcol': 0,
     \   'col': l:match[2] + 0,
     \   'text': l:match[4] . ' (' . (l:match[3]+0) . ')',
     \   'type': 'W',
-    \   'nr': -1
     \})
   endfor
 
diff --git a/ale_linters/tex/lacheck.vim b/ale_linters/tex/lacheck.vim
index 848cbed2..94b79e6c 100644
--- a/ale_linters/tex/lacheck.vim
+++ b/ale_linters/tex/lacheck.vim
@@ -38,11 +38,9 @@ function! ale_linters#tex#lacheck#Handle(buffer, lines) abort
     call add(l:output, {
     \   'bufnr': a:buffer,
     \   'lnum': l:match[1] + 0,
-    \   'vcol': 0,
     \   'col': 0,
     \   'text': l:match[2],
     \   'type': 'W',
-    \   'nr': -1
     \})
   endfor
 
diff --git a/ale_linters/typescript/tslint.vim b/ale_linters/typescript/tslint.vim
index ae41ed4f..2f4d235e 100644
--- a/ale_linters/typescript/tslint.vim
+++ b/ale_linters/typescript/tslint.vim
@@ -27,11 +27,9 @@ function! ale_linters#typescript#tslint#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': l:column,
         \   'text': l:text,
         \   'type': l:type,
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/typescript/typecheck.vim b/ale_linters/typescript/typecheck.vim
index 0de6639c..c5ba05f2 100644
--- a/ale_linters/typescript/typecheck.vim
+++ b/ale_linters/typescript/typecheck.vim
@@ -26,11 +26,9 @@ function! ale_linters#typescript#typecheck#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': l:column,
         \   'text': l:text,
         \   'type': l:type,
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/verilog/iverilog.vim b/ale_linters/verilog/iverilog.vim
index cf1b0fa8..0a118f3e 100644
--- a/ale_linters/verilog/iverilog.vim
+++ b/ale_linters/verilog/iverilog.vim
@@ -25,11 +25,9 @@ function! ale_linters#verilog#iverilog#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': 1,
         \   'text': l:text,
         \   'type': l:type,
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/ale_linters/verilog/verilator.vim b/ale_linters/verilog/verilator.vim
index 4ff2093a..b1344382 100644
--- a/ale_linters/verilog/verilator.vim
+++ b/ale_linters/verilog/verilator.vim
@@ -39,11 +39,9 @@ function! ale_linters#verilog#verilator#Handle(buffer, lines) abort
             call add(l:output, {
             \   'bufnr': a:buffer,
             \   'lnum': l:line,
-            \   'vcol': 0,
             \   'col': 1,
             \   'text': l:text,
             \   'type': l:type,
-            \   'nr': -1,
             \})
         endif
     endfor
diff --git a/ale_linters/yaml/yamllint.vim b/ale_linters/yaml/yamllint.vim
index 42006fb4..dcad70c3 100644
--- a/ale_linters/yaml/yamllint.vim
+++ b/ale_linters/yaml/yamllint.vim
@@ -39,11 +39,9 @@ function! ale_linters#yaml#yamllint#Handle(buffer, lines) abort
         call add(l:output, {
         \   'bufnr': a:buffer,
         \   'lnum': l:line,
-        \   'vcol': 0,
         \   'col': l:col,
         \   'text': l:text,
         \   'type': l:type ==# 'error' ? 'E' : 'W',
-        \   'nr': -1,
         \})
     endfor
 
diff --git a/autoload/ale/engine.vim b/autoload/ale/engine.vim
index 61db4a1c..bc834083 100644
--- a/autoload/ale/engine.vim
+++ b/autoload/ale/engine.vim
@@ -219,12 +219,9 @@ function! s:HandleExit(job) abort
 
     let l:linter_loclist = ale#util#GetFunction(l:linter.callback)(l:buffer, l:output)
 
-    " Make some adjustments to the loclists to fix common problems.
-    call s:FixLocList(l:buffer, l:linter_loclist)
-
-    for l:item in l:linter_loclist
-        let l:item.linter_name = l:linter.name
-    endfor
+    " Make some adjustments to the loclists to fix common problems, and also
+    " to set default values for loclist items.
+    let l:linter_loclist = ale#engine#FixLocList(l:buffer, l:linter, l:linter_loclist)
 
     " Add the loclist items from the linter.
     call extend(g:ale_buffer_info[l:buffer].new_loclist, l:linter_loclist)
@@ -303,20 +300,50 @@ function! s:HandleExitStatusVim(job, exit_code) abort
     call s:SetExitCode(a:job, a:exit_code)
 endfunction
 
-function! s:FixLocList(buffer, loclist) abort
+function! ale#engine#FixLocList(buffer, linter, loclist) abort
+    let l:new_loclist = []
+
     " Some errors have line numbers beyond the end of the file,
     " so we need to adjust them so they set the error at the last line
     " of the file instead.
     let l:last_line_number = ale#util#GetLineCount(a:buffer)
 
-    for l:item in a:loclist
+    for l:old_item in a:loclist
+        " Copy the loclist item with some default values and corrections.
+        "
+        " line and column numbers will be converted to numbers.
+        " The buffer will default to the buffer being checked.
+        " The vcol setting will default to 0, a byte index.
+        " The error type will default to 'E' for errors.
+        " The error number will default to -1.
+        "
+        " The line number and text are the only required keys.
+        "
+        " The linter_name will be set on the errors so it can be used in
+        " output, filtering, etc..
+        let l:item = {
+        \   'text': l:old_item.text,
+        \   'lnum': str2nr(l:old_item.lnum),
+        \   'col': str2nr(get(l:old_item, 'col', 0)),
+        \   'bufnr': get(l:old_item, 'bufnr', a:buffer),
+        \   'vcol': get(l:old_item, 'vcol', 0),
+        \   'type': get(l:old_item, 'type', 'E'),
+        \   'nr': get(l:old_item, 'nr', -1),
+        \   'linter_name': a:linter.name,
+        \}
+
         if l:item.lnum == 0
             " When errors appear at line 0, put them at line 1 instead.
             let l:item.lnum = 1
         elseif l:item.lnum > l:last_line_number
+            " When errors go beyond the end of the file, put them at the end.
             let l:item.lnum = l:last_line_number
         endif
+
+        call add(l:new_loclist, l:item)
     endfor
+
+    return l:new_loclist
 endfunction
 
 " Given part of a command, replace any % with %%, so that no characters in
diff --git a/doc/ale.txt b/doc/ale.txt
index 5f9cdea0..b938ae06 100644
--- a/doc/ale.txt
+++ b/doc/ale.txt
@@ -1219,6 +1219,26 @@ ale#linter#Define(filetype, linter)                       *ale#linter#Define()*
 
                          This argument is required.
 
+                         The keys for each item in the List will be handled in
+                         the following manner:
+
+                         `text` - This error message is required.
+                         `lnum` - The line number is required. Any strings
+                           will be automatically converted to numbers by
+                           using `str2nr()`.
+
+                           Line 0 will be moved to line 1, and lines beyond
+                           the end of the file will be moved to the end.
+                         `col` - The column number is optional and will
+                           default to `0`. Any strings will be automatically
+                           coverted to number using `str2nr()`.
+                         `bufnr` - The buffer number should match the buffer
+                           being checked, and this value will default to
+                           the buffer being checked.
+                         `vcol` - Defaults to `0`.
+                         `type` - Defaults to `'E'`.
+                         `nr` - Defaults to `-1`.
+
   `executable`             A |String| naming the executable itself which
                          will be run.  This value will be used to check if the
                          program requested is installed or not.
diff --git a/test/test_credo_handler.vader b/test/test_credo_handler.vader
index 1100ce1b..73f98ba0 100644
--- a/test/test_credo_handler.vader
+++ b/test/test_credo_handler.vader
@@ -6,20 +6,16 @@ Execute(The credo handler should parse lines correctly):
   \   {
   \     'bufnr': 347,
   \     'lnum': 1,
-  \     'vcol': 0,
   \     'col': 4,
   \     'text': 'There is no whitespace around parentheses/brackets most of the time, but here there is.',
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 26,
-  \     'vcol': 0,
   \     'col': 0,
   \     'text': 'If/else blocks should not have a negated condition in `if`.',
   \     'type': 'W',
-  \     'nr': -1,
   \   },
   \ ],
   \ ale_linters#elixir#credo#Handle(347, [
diff --git a/test/test_eslint_handler.vader b/test/test_eslint_handler.vader
index 57efa6b0..692d8b30 100644
--- a/test/test_eslint_handler.vader
+++ b/test/test_eslint_handler.vader
@@ -6,29 +6,23 @@ Execute(The eslint handler should parse lines correctly):
   \   {
   \     'bufnr': 347,
   \     'lnum': 47,
-  \     'vcol': 0,
   \     'col': 14,
   \     'text': 'Missing trailing comma. [Warning/comma-dangle]',
   \     'type': 'W',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 56,
-  \     'vcol': 0,
   \     'col': 41,
   \     'text': 'Missing semicolon. [Error/semi]',
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 13,
-  \     'vcol': 0,
   \     'col': 3,
   \     'text': 'Parsing error: Unexpected token',
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \ ],
   \ ale_linters#javascript#eslint#Handle(347, [
diff --git a/test/test_flow_handler.vader b/test/test_flow_handler.vader
index 12fe0891..c6b86104 100644
--- a/test/test_flow_handler.vader
+++ b/test/test_flow_handler.vader
@@ -114,7 +114,6 @@ Execute(The flow handler should process errors correctly.):
   \ {
   \   'lnum': 417,
   \   'bufnr': 347,
-  \   'vcol': 0,
   \   'type': 'E',
   \   'col': 10,
   \   'text': 'number: This type is incompatible with the expected return type of array type',
@@ -122,7 +121,6 @@ Execute(The flow handler should process errors correctly.):
   \ {
   \   'lnum': 419,
   \   'bufnr': 347,
-  \   'vcol': 0,
   \   'type': 'W',
   \   'col': 3,
   \   'text': 'unreachable code:',
diff --git a/test/test_fortran_handler.vader b/test/test_fortran_handler.vader
index 7648ff66..acd83e3c 100644
--- a/test/test_fortran_handler.vader
+++ b/test/test_fortran_handler.vader
@@ -6,20 +6,16 @@ Execute(The fortran handler should parse lines from GCC 4.1.2 correctly):
   \   {
   \     'bufnr': 357,
   \     'lnum': 4,
-  \     'vcol': 0,
   \     'col': 0,
   \     'text': "Symbol ‘b’ at (1) has no IMPLICIT type",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 357,
   \     'lnum': 3,
-  \     'vcol': 0,
   \     'col': 0,
   \     'text': "Symbol ‘a’ at (1) has no IMPLICIT type",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \ ],
   \ ale_linters#fortran#gcc#Handle(357, [
@@ -47,20 +43,16 @@ Execute(The fortran handler should parse lines from GCC 4.9.3 correctly):
   \   {
   \     'bufnr': 357,
   \     'lnum': 3,
-  \     'vcol': 0,
   \     'col': 12,
   \     'text': "Symbol ‘a’ at (1) has no IMPLICIT type",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 357,
   \     'lnum': 4,
-  \     'vcol': 0,
   \     'col': 12,
   \     'text': "Symbol ‘b’ at (1) has no IMPLICIT type",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \ ],
   \ ale_linters#fortran#gcc#Handle(357, [
@@ -89,20 +81,16 @@ Execute(The fortran handler should parse lines from GCC 6.3.1 correctly):
   \   {
   \     'bufnr': 337,
   \     'lnum': 3,
-  \     'vcol': 0,
   \     'col': 12,
   \     'text': "Symbol ‘a’ at (1) has no IMPLICIT type",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 337,
   \     'lnum': 4,
-  \     'vcol': 0,
   \     'col': 12,
   \     'text': "Symbol ‘b’ at (1) has no IMPLICIT type",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \ ],
   \ ale_linters#fortran#gcc#Handle(337, [
diff --git a/test/test_loclist_corrections.vader b/test/test_loclist_corrections.vader
new file mode 100644
index 00000000..281f6787
--- /dev/null
+++ b/test/test_loclist_corrections.vader
@@ -0,0 +1,130 @@
+Given foo (Some file with lines to count):
+  foo12345678
+  bar12345678
+  baz12345678
+  four12345678
+  five12345678
+  six12345678
+  seven12345678
+  eight12345678
+  nine12345678
+  ten12345678
+
+Execute(FixLocList should set all the default values correctly):
+  AssertEqual
+  \ [
+  \   {
+  \     'text': 'a',
+  \     'lnum': 2,
+  \     'col': 0,
+  \     'bufnr': bufnr('%'),
+  \     'vcol': 0,
+  \     'type': 'E',
+  \     'nr': -1,
+  \     'linter_name': 'foobar',
+  \   },
+  \   {
+  \     'text': 'b',
+  \     'lnum': 2,
+  \     'col': 0,
+  \     'bufnr': bufnr('%'),
+  \     'vcol': 0,
+  \     'type': 'E',
+  \     'nr': -1,
+  \     'linter_name': 'foobar',
+  \   },
+  \],
+  \ ale#engine#FixLocList(
+  \   bufnr('%'),
+  \   {'name': 'foobar'},
+  \   [{'text': 'a', 'lnum': 2}, {'text': 'b', 'lnum': 2}],
+  \ )
+
+Execute(FixLocList should use the values we supply):
+  AssertEqual
+  \ [
+  \   {
+  \     'text': 'a',
+  \     'lnum': 3,
+  \     'col': 4,
+  \     'bufnr': 10000,
+  \     'vcol': 1,
+  \     'type': 'W',
+  \     'nr': 42,
+  \     'linter_name': 'foobar',
+  \   },
+  \],
+  \ ale#engine#FixLocList(
+  \   bufnr('%'),
+  \   {'name': 'foobar'},
+  \   [{
+  \     'text': 'a',
+  \     'lnum': 3,
+  \     'col': 4,
+  \     'bufnr': 10000,
+  \     'vcol': 1,
+  \     'type': 'W',
+  \     'nr': 42,
+  \   }],
+  \ )
+
+Execute(FixLocList should set items with lines beyond the end to the last line):
+  AssertEqual
+  \ [
+  \   {
+  \     'text': 'a',
+  \     'lnum': 10,
+  \     'col': 0,
+  \     'bufnr': bufnr('%'),
+  \     'vcol': 0,
+  \     'type': 'E',
+  \     'nr': -1,
+  \     'linter_name': 'foobar',
+  \   },
+  \],
+  \ ale#engine#FixLocList(
+  \   bufnr('%'),
+  \   {'name': 'foobar'},
+  \   [{'text': 'a', 'lnum': 11}],
+  \ )
+
+Execute(FixLocList should move line 0 to line 1):
+  AssertEqual
+  \ [
+  \   {
+  \     'text': 'a',
+  \     'lnum': 1,
+  \     'col': 0,
+  \     'bufnr': bufnr('%'),
+  \     'vcol': 0,
+  \     'type': 'E',
+  \     'nr': -1,
+  \     'linter_name': 'foobar',
+  \   },
+  \],
+  \ ale#engine#FixLocList(
+  \   bufnr('%'),
+  \   {'name': 'foobar'},
+  \   [{'text': 'a', 'lnum': 0}],
+  \ )
+
+Execute(FixLocList should convert line and column numbers correctly):
+  " The numbers should be 10, not 8 as octals.
+  AssertEqual
+  \ [
+  \   {
+  \     'text': 'a',
+  \     'lnum': 10,
+  \     'col': 10,
+  \     'bufnr': bufnr('%'),
+  \     'vcol': 0,
+  \     'type': 'E',
+  \     'nr': -1,
+  \     'linter_name': 'foobar',
+  \   },
+  \],
+  \ ale#engine#FixLocList(
+  \   bufnr('%'),
+  \   {'name': 'foobar'},
+  \   [{'text': 'a', 'lnum': '010', 'col': '010'}],
+  \ )
diff --git a/test/test_mypy_handler.vader b/test/test_mypy_handler.vader
index f886501f..e161f8ae 100644
--- a/test/test_mypy_handler.vader
+++ b/test/test_mypy_handler.vader
@@ -6,20 +6,16 @@ Execute(The mypy handler should parse lines correctly):
   \   {
   \     'bufnr': 347,
   \     'lnum': 4,
-  \     'vcol': 0,
   \     'col': 0,
   \     'text': "No library stub file for module 'django.db'",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 40,
-  \     'vcol': 0,
   \     'col': 5,
   \     'text': "Some other problem",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \ ],
   \ ale_linters#python#mypy#Handle(347, [
diff --git a/test/test_php_handler.vader b/test/test_php_handler.vader
index 14e4d60f..c3d76079 100644
--- a/test/test_php_handler.vader
+++ b/test/test_php_handler.vader
@@ -6,47 +6,37 @@ Execute(The php handler should parse lines correctly):
   \   {
   \     'bufnr': 347,
   \     'lnum': 47,
-  \     'vcol': 0,
   \     'col': 0,
   \     'text': "syntax error, unexpected ';', expecting ']'",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 56,
-  \     'vcol': 0,
   \     'col': 0,
   \     'text': "syntax error, unexpected '/', expecting function (T_FUNCTION) or const (T_CONST)",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 13,
-  \     'vcol': 0,
   \     'col': 0,
   \     'text': "syntax error, unexpected ')'",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 5,
-  \     'vcol': 0,
   \     'col': 0,
   \     'text': "Invalid numeric literal",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 21,
-  \     'vcol': 0,
   \     'col': 0,
   \     'text': "syntax error, unexpected end of file",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \ ],
   \ ale_linters#php#php#Handle(347, [
diff --git a/test/test_standard_handler.vader b/test/test_standard_handler.vader
index 1d1b71c4..4a69c211 100644
--- a/test/test_standard_handler.vader
+++ b/test/test_standard_handler.vader
@@ -6,29 +6,23 @@ Execute(The standard handler should parse lines correctly):
   \   {
   \     'bufnr': 347,
   \     'lnum': 47,
-  \     'vcol': 0,
   \     'col': 14,
   \     'text': 'Expected indentation of 2 spaces but found 4.',
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 56,
-  \     'vcol': 0,
   \     'col': 41,
   \     'text': 'Strings must use singlequote.',
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 13,
-  \     'vcol': 0,
   \     'col': 3,
   \     'text': 'Parsing error: Unexpected token',
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \ ],
   \ ale_linters#javascript#standard#Handle(347, [
diff --git a/test/test_typecheck_handler.vader b/test/test_typecheck_handler.vader
index 2f8a219b..e42bcaf3 100644
--- a/test/test_typecheck_handler.vader
+++ b/test/test_typecheck_handler.vader
@@ -6,20 +6,16 @@ Execute(The typecheck handler should parse lines correctly):
   \   {
   \     'bufnr': 347,
   \     'lnum': 16,
-  \     'vcol': 0,
   \     'col': 7,
   \     'text': "Type 'A' is not assignable to type 'B'",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \   {
   \     'bufnr': 347,
   \     'lnum': 7,
-  \     'vcol': 0,
   \     'col': 41,
   \     'text': "Property 'a' does not exist on type 'A'",
   \     'type': 'E',
-  \     'nr': -1,
   \   },
   \ ],
   \ ale_linters#typescript#typecheck#Handle(347, [