Added support for harper in markdown files (#5104)

autoload/ale/lsp.vim

@@ -329,6 +329,27 @@ function! ale#lsp#UpdateConfig(conn_id, buffer, config) abort
     return 1
 endfunction
 
+function! ale#lsp#GetConnectionConfig(conn_id) abort
+    let l:conn = get(s:connections, a:conn_id, {})
+
+    return get(l:conn, 'config', {})
+endfunction
+
+" Send a JSON-RPC response to a server-initiated request (e.g. workspace/configuration).
+" Unlike ale#lsp#Send, which builds outgoing requests/notifications with a 'method' field,
+" this sends a response with 'id' + 'result' fields to reply to a request the server sent us.
+function! ale#lsp#SendResponse(conn_id, id, result) abort
+    let l:conn = get(s:connections, a:conn_id, {})
+
+    if empty(l:conn)
+        return
+    endif
+
+    let l:body = json_encode({'jsonrpc': '2.0', 'id': a:id, 'result': a:result})
+    let l:data = 'Content-Length: ' . strlen(l:body) . "\r\n\r\n" . l:body
+    call s:SendMessageData(l:conn, l:data)
+endfunction
+
 function! ale#lsp#CallInitCallbacks(conn_id) abort
     let l:conn = get(s:connections, a:conn_id, {})
 

autoload/ale/lsp_linter.vim

@@ -241,6 +241,10 @@ function! ale#lsp_linter#HandleLSPResponse(conn_id, response) abort
         \   : a:response.result.items
 
         call ale#lsp_linter#HandleLSPDiagnostics(a:conn_id, l:uri, l:diagnostics)
+    elseif l:method is# 'workspace/configuration'
+        let l:items = get(get(a:response, 'params', {}), 'items', [])
+        let l:config = ale#lsp#GetConnectionConfig(a:conn_id)
+        call ale#lsp#SendResponse(a:conn_id, a:response.id, map(copy(l:items), 'l:config'))
     elseif l:method is# 'window/showMessage'
         call ale#lsp_window#HandleShowMessage(
         \   s:lsp_linter_map[a:conn_id].name,