查看Messages的buffer,内容如下
Warning: detected # already running in #<buffer ggtags-definition>; interrupting… Warning: detected #<process global<1>> already running in #<buffer ggtags-definition>; interrupting… error in process sentinel: Selecting deleted buffer [4 times] Warning: detected # already running in #<buffer ggtags-definition>; interrupting… Warning: detected #<process global<1>> already running in #<buffer ggtags-definition>; interrupting… error in process sentinel: accept-process-output: Selecting deleted buffer error in process sentinel: Selecting deleted buffer error in process sentinel: accept-process-output: Selecting deleted buffer error in process sentinel: Selecting deleted buffer