Fix #500 - Support defining aliases for linter names

autoload/ale/debugging.vim

@@ -105,6 +105,22 @@ function! s:EchoCommandHistory() abort
     endfor
 endfunction
 
+function! s:EchoLinterAliases(all_linters) abort
+    let l:first = 1
+
+    for l:linter in a:all_linters
+        if !empty(l:linter.aliaes)
+            if !l:first
+                echom '   Linter Aliases:'
+            endif
+
+            let l:first = 0
+
+            echom string(l:linter.name) . ' -> ' . string(l:linter.aliaes)
+        endif
+    endfor
+endfunction
+
 function! ale#debugging#Info() abort
     let l:filetype = &filetype
 
@@ -120,8 +136,13 @@ function! ale#debugging#Info() abort
         call extend(l:all_linters, ale#linter#GetAll(l:aliased_filetype))
     endfor
 
-    let l:all_names = map(l:all_linters, 'v:val[''name'']')
-    let l:enabled_names = map(l:enabled_linters, 'v:val[''name'']')
+    let l:all_names = map(copy(l:all_linters), 'v:val[''name'']')
+    let l:enabled_names = map(copy(l:enabled_linters), 'v:val[''name'']')
+    let l:linter_aliases = []
+
+    for l:linter in l:all_linters
+        call add(l:linter_aliases, [l:linter.name, l:linter.aliaes])
+    endfor
 
     " Load linter variables to display
     " This must be done after linters are loaded.
@@ -129,6 +150,7 @@ function! ale#debugging#Info() abort
 
     echom ' Current Filetype: ' . l:filetype
     echom 'Available Linters: ' . string(l:all_names)
+    call s:EchoLinterAliases(l:all_linters)
     echom '  Enabled Linters: ' . string(l:enabled_names)
     echom ' Linter Variables:'
     echom ''

autoload/ale/linter.vim

@@ -164,6 +164,13 @@ function! ale#linter#PreProcess(linter) abort
         throw 'Only one of `lint_file` or `read_buffer` can be `1`'
     endif
 
+    let l:obj.aliases = get(a:linter, 'aliases', [])
+
+    if type(l:obj.aliases) != type([])
+    \|| len(filter(copy(l:obj.aliases), 'type(v:val) != type('''')')) > 0
+        throw '`aliases` must be a List of String values'
+    endif
+
     return l:obj
 endfunction
 
@@ -256,9 +263,14 @@ function! ale#linter#Get(original_filetypes) abort
         elseif type(l:linter_names) == type([])
             " Select only the linters we or the user has specified.
             for l:linter in l:all_linters
-                if index(l:linter_names, l:linter.name) >= 0
-                    call add(l:filetype_linters, l:linter)
-                endif
+                let l:name_list = [l:linter.name] + l:linter.aliases
+
+                for l:name in l:name_list
+                    if index(l:linter_names, l:name) >= 0
+                        call add(l:filetype_linters, l:linter)
+                        break
+                    endif
+                endfor
             endfor
         endif