fix: improve fzf error handling

src/fzf.cr

@@ -11,8 +11,17 @@ module GX
       error = STDERR
       process = Process.new("fzf", ["--ansi"], input: input, output: output, error: error)
 
-      unless process.wait.success?
-        STDERR.puts "Error executing fzf: #{error.to_s.strip}".colorize(:red)
+      status = process.wait
+      case status.exit_code
+      when 0
+      when 1
+        STDERR.puts "No match".colorize(:red)
+        exit(1)
+      when 130
+        STDERR.puts "Interrupted".colorize(:red)
+        exit(1)
+      else # includes retcode = 2 (error)
+        STDERR.puts "Error executing fzf: #{error.to_s.strip} (#{status.exit_code})".colorize(:red)
         exit(1)
       end