1 files changed, 5 insertions, 26 deletions
diff --git a/ale_linters/sh/shellcheck.vim b/ale_linters/sh/shellcheck.vim
index 1f6bdf81..e79b3b88 100644
--- a/ale_linters/sh/shellcheck.vim
+++ b/ale_linters/sh/shellcheck.vim
@@ -15,8 +15,6 @@ let g:ale_sh_shellcheck_executable =
 let g:ale_sh_shellcheck_options =
 \   get(g:, 'ale_sh_shellcheck_options', '')
 
-let s:version_cache = {}
-
 function! ale_linters#sh#shellcheck#GetExecutable(buffer) abort
     return ale#Var(a:buffer, 'sh_shellcheck_executable')
 endfunction
@@ -49,38 +47,19 @@ function! ale_linters#sh#shellcheck#VersionCheck(buffer) abort
     let l:executable = ale_linters#sh#shellcheck#GetExecutable(a:buffer)
 
     " Don't check the version again if we've already cached it.
-    if has_key(s:version_cache, l:executable)
-        return ''
-    endif
-
-    return ale#Escape(l:executable) . ' --version'
-endfunction
-
-" Get the shellcheck version from the cache, or parse it and cache it.
-function! s:GetVersion(executable, output) abort
-    let l:version = get(s:version_cache, a:executable, [])
-
-    for l:match in ale#util#GetMatches(a:output, '\v\d+\.\d+\.\d+')
-        let l:version = ale#semver#Parse(l:match[0])
-        let s:version_cache[a:executable] = l:version
-    endfor
-
-    return l:version
-endfunction
-
-function! s:CanUseExternalOption(version) abort
-    return !empty(a:version)
-    \   && ale#semver#GreaterOrEqual(a:version, [0, 4, 0])
+    return !ale#semver#HasVersion(l:executable)
+    \   ? ale#Escape(l:executable) . ' --version'
+    \   : ''
 endfunction
 
 function! ale_linters#sh#shellcheck#GetCommand(buffer, version_output) abort
     let l:executable = ale_linters#sh#shellcheck#GetExecutable(a:buffer)
-    let l:version = s:GetVersion(l:executable, a:version_output)
+    let l:version = ale#semver#GetVersion(l:executable, a:version_output)
 
     let l:options = ale#Var(a:buffer, 'sh_shellcheck_options')
     let l:exclude_option = ale#Var(a:buffer, 'sh_shellcheck_exclusions')
     let l:dialect = ale_linters#sh#shellcheck#GetDialectArgument(a:buffer)
-    let l:external_option = s:CanUseExternalOption(l:version) ? ' -x' : ''
+    let l:external_option = ale#semver#GTE(l:version, [0, 4, 0]) ? ' -x' : ''
 
     return ale#path#BufferCdString(a:buffer)
     \   . ale#Escape(l:executable)