add lsp.workspace_diag_only_cwd option to filter out diagnostics entries from files outside of the current working directory (#36)

* add lsp.workspace_diag_only_cwd option to filter

out diagnostics entries from files outside of the current
working directory;

* switch to cwd_only option;

* restore original filtering in buffer_diag loop;

README.md

@@ -360,6 +360,7 @@ require'fzf-lua'.setup {
   lsp = {
     prompt            = '❯ ',
     -- cwd               = vim.loop.cwd(),
+    cwd_only          = false, -- show workspace diagnostics only for the files in cwd
     file_icons        = true,
     git_icons         = false,
     lsp_icons         = true,

lua/fzf-lua/config.lua

@@ -302,6 +302,7 @@ M.globals.lsp = {
           ["Information"] = { icon = "", color = "blue" },      -- info
           ["Hint"]        = { icon = "", color = "magenta" },   -- hint
       },
+      cwd_only = false,
   }
 M.globals.builtin = {
       prompt              = 'Builtin> ',

lua/fzf-lua/providers/lsp.lua

@@ -384,12 +384,14 @@ M.diagnostics = function(opts)
         end
       end
       for bufnr, diags in pairs(buffer_diags) do
-        for _, diag in ipairs(diags) do
-          -- workspace diagnostics may include empty tables for unused bufnr
-          if not vim.tbl_isempty(diag) then
-            if filter_diag_severity(opts, diag.severity) then
-              diagnostics_handler(opts, cb, co,
-                preprocess_diag(diag, bufnr))
+        if not opts.cwd_only or (opts.cwd_only and string.find(vim.api.nvim_buf_get_name(bufnr), vim.loop.cwd(), 1, true) ) then
+          for _, diag in ipairs(diags) do
+            -- workspace diagnostics may include empty tables for unused bufnr
+            if not vim.tbl_isempty(diag) then
+              if filter_diag_severity(opts, diag.severity) then
+                diagnostics_handler(opts, cb, co,
+                  preprocess_diag(diag, bufnr))
+              end
             end
           end
         end