Fix #1727 - Replace previoulsy defined linters with matching names

1 files changed, 4 insertions, 2 deletions

diff --git a/autoload/ale/linter.vim b/autoload/ale/linter.vim
index 6a714d6a..78dcd3a2 100644
--- a/autoload/ale/linter.vim
+++ b/autoload/ale/linter.vim
@@ -358,12 +358,14 @@ function! ale#linter#Define(filetype, linter) abort
     " This command will throw from the sandbox.
     let &l:equalprg=&l:equalprg
 
+    let l:new_linter = ale#linter#PreProcess(a:filetype, a:linter)
+
     if !has_key(s:linters, a:filetype)
         let s:linters[a:filetype] = []
     endif
 
-    let l:new_linter = ale#linter#PreProcess(a:filetype, a:linter)
-
+    " Remove previously defined linters with the same name.
+    call filter(s:linters[a:filetype], 'v:val.name isnot# a:linter.name')
     call add(s:linters[a:filetype], l:new_linter)
 endfunction