diff --git a/ale_linters/javascript/xo.vim b/ale_linters/javascript/xo.vim
index dc71f0d..0276b55 100644
--- a/ale_linters/javascript/xo.vim
+++ b/ale_linters/javascript/xo.vim
@@ -11,20 +11,20 @@ let g:ale_javascript_xo_use_global =
 \   get(g:, 'ale_javascript_xo_use_global', 0)
 
 function! ale_linters#javascript#xo#GetExecutable(buffer) abort
-    if g:ale_javascript_xo_use_global
-        return g:ale_javascript_xo_executable
+    if ale#Var(a:buffer, 'javascript_xo_use_global')
+        return ale#Var(a:buffer, 'javascript_xo_executable')
     endif
 
     return ale#path#ResolveLocalPath(
     \   a:buffer,
     \   'node_modules/.bin/xo',
-    \   g:ale_javascript_xo_executable
+    \   ale#Var(a:buffer, 'javascript_xo_executable')
     \)
 endfunction
 
 function! ale_linters#javascript#xo#GetCommand(buffer) abort
     return ale_linters#javascript#xo#GetExecutable(a:buffer)
-    \   . ' ' . g:ale_javascript_xo_options
+    \   . ' ' . ale#Var(a:buffer, 'javascript_xo_options')
     \   . ' --reporter unix --stdin --stdin-filename %s'
 endfunction
 
diff --git a/ale_linters/sh/shellcheck.vim b/ale_linters/sh/shellcheck.vim
index 1d9f7b0..b4a622a 100644
--- a/ale_linters/sh/shellcheck.vim
+++ b/ale_linters/sh/shellcheck.vim
@@ -20,12 +20,6 @@ function! ale_linters#sh#shellcheck#GetExecutable(buffer) abort
     return ale#Var(a:buffer, 'sh_shellcheck_executable')
 endfunction
 
-if g:ale_linters_sh_shellcheck_exclusions !=# ''
-    let s:exclude_option = '-e ' .  g:ale_linters_sh_shellcheck_exclusions
-else
-    let s:exclude_option = ''
-endif
-
 function! s:GetDialectArgument() abort
     if exists('b:is_bash') && b:is_bash
         return '-s bash'
@@ -39,9 +33,12 @@ function! s:GetDialectArgument() abort
 endfunction
 
 function! ale_linters#sh#shellcheck#GetCommand(buffer) abort
+    let l:exclude_option = ale#Var(a:buffer, 'linters_sh_shellcheck_exclusions')
+
     return ale_linters#sh#shellcheck#GetExecutable(a:buffer)
     \   . ' ' . ale#Var(a:buffer, 'sh_shellcheck_options')
-    \   . ' ' . s:exclude_option . ' ' . s:GetDialectArgument() . ' -f gcc -'
+    \   . ' ' . (!empty(l:exclude_option) ? '-e ' . l:exclude_option : '')
+    \   . ' ' . s:GetDialectArgument() . ' -f gcc -'
 endfunction
 
 call ale#linter#Define('sh', {
diff --git a/ale_linters/sml/smlnj.vim b/ale_linters/sml/smlnj.vim
index 4878637..fda1d03 100644
--- a/ale_linters/sml/smlnj.vim
+++ b/ale_linters/sml/smlnj.vim
@@ -39,7 +39,7 @@ function! ale_linters#sml#smlnj#Handle(buffer, lines) abort
     return l:out
 endfunction
 
-call g:ale#linter#Define('sml', {
+call ale#linter#Define('sml', {
 \   'name': 'smlnj',
 \   'executable': 'sml',
 \   'command': 'sml',
diff --git a/doc/ale-sh.txt b/doc/ale-sh.txt
index b35d6f2..597b75f 100644
--- a/doc/ale-sh.txt
+++ b/doc/ale-sh.txt
@@ -53,7 +53,7 @@ g:ale_linters_sh_shellcheck_exclusions *g:ale_linters_sh_shellcheck_exclusions*
   will be sourced by other scripts, use the buffer-local variant:
 >
     autocmd BufEnter PKGBUILD,.env
-    \   let b:ale_sh_shellcheck_exclusions = 'SC2034,SC2154,SC2164'
+    \   let b:ale_linters_sh_shellcheck_exclusions = 'SC2034,SC2154,SC2164'
 <
 
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