fixing error when no matches

lua/grug-far/actions/replace.lua

@@ -121,10 +121,12 @@ local function replace(params)
   end)
 
   local reportError = function(errorMessage)
+    vim.api.nvim_buf_set_option(buf, 'modifiable', true)
+
     state.status = 'error'
     state.progressCount = nil
     state.actionMessage = getActionMessage(errorMessage)
-    resultsList.appendError(buf, context, errorMessage)
+    resultsList.setError(buf, context, errorMessage)
     renderResultsHeader(buf, context)
   end
 

lua/grug-far/actions/search.lua

@@ -43,7 +43,7 @@ local function search(params)
       state.progressCount = nil
       if status == 'error' then
         state.stats = nil
-        resultsList.appendError(buf, context, errorMessage)
+        resultsList.setError(buf, context, errorMessage)
       end
 
       renderResultsHeader(buf, context)

lua/grug-far/render/resultsList.lua

@@ -18,10 +18,12 @@ function M.appendResultsChunk(buf, context, data)
   end
 end
 
-function M.appendError(buf, context, error)
+function M.setError(buf, context, error)
+  M.clear(buf, context)
+
   local startLine = context.state.headerRow + 1
 
-  local err_lines = vim.split(error, '\n')
+  local err_lines = vim.split((error and #error > 0) and error or 'Unexpected error!', '\n')
   vim.api.nvim_buf_set_lines(buf, startLine, startLine, false, err_lines)
 
   for i = startLine, startLine + #err_lines do

lua/grug-far/rg/fetchWithRg.lua

@@ -24,6 +24,10 @@ local function fetchWithRg(params)
     stdout:close()
     stderr:close()
     handle:close()
+
+    if code > 0 and #errorMessage == 0 then
+      errorMessage = 'no matches'
+    end
     local isSuccess = code == 0 and #errorMessage == 0
     on_finish(isSuccess and 'success' or 'error', errorMessage);
   end)