tags_live_grep: added support 'multiprocess=false'

lua/fzf-lua/providers/grep.lua

@@ -147,10 +147,11 @@ M.live_grep_st = function(opts)
     return get_grep_cmd(opts, query, true)
   end
 
-  if opts.experimental and (opts.git_icons or opts.file_icons) then
-    opts._fn_transform = function(x)
-      return core.make_entry_file(opts, x)
-    end
+  if opts.requires_processing or opts.git_icons or opts.file_icons then
+    opts._fn_transform = opts._fn_transform
+      or function(x)
+        return core.make_entry_file(opts, x)
+      end
   end
 
   -- disable global resume

lua/fzf-lua/providers/tags.lua

@@ -200,15 +200,24 @@ local function tags(opts)
     return
   end
 
-  opts._fn_transform = make_entry.tag                            -- multiprocess=false
-  opts._fn_transform_str = [[return require("make_entry").tag]]  -- multiprocess=true
   -- prevents 'file|git_icons=false' from overriding processing
   opts.requires_processing = true
+  opts._fn_transform = make_entry.tag                            -- multiprocess=false
+  opts._fn_transform_str = [[return require("make_entry").tag]]  -- multiprocess=true
 
   if opts.lgrep then
+    -- live_grep requested by caller ('tags_live_grep')
     opts.prompt = '*' .. opts.prompt
     opts.filename = opts._ctags_file
-    return require'fzf-lua.providers.grep'.live_grep_mt(opts)
+    if opts.multiprocess then
+      return require'fzf-lua.providers.grep'.live_grep_mt(opts)
+    else
+      -- 'live_grep_st' uses different signature '_fn_transform'
+      opts._fn_transform = function(x)
+        return make_entry.tag(opts, x)
+      end
+      return require'fzf-lua.providers.grep'.live_grep_st(opts)
+    end
   end
 
   opts._curr_file = opts._curr_file and