Cannot find tags start with '<'

[amosbird]

This issue happens when I try to jump to tags in a thrift file. I've customized gtags to generate thrift tags. Most symbols work just fine. However it cannot jump to tags when the symbol on cursor begins with a '<'. This won't happen in c++ or java mode. How can I debug this?

Failing case:

struct A {
  1: required set<B> bad
                  ^
}

Working case:

struct A {
  1: required set<  B> good
                    ^
}

[syohex]

Please check symbol table. I suppose it set < as symbol character. Please add following configuration or evaluate it and try again.

(modify-syntax-entry ?< ".") ;; Set '<' character as punctuation character

[amosbird]

It works. Thanks!