helm-gtags does not support muli-bytes language tags

[dingmingxin]

There is GTAGS GPATH GRTAGS in my project root. I had generated tags using gtags command. When using gtags -d GTAGS I can see some of the tags are started with Chinese which can not show in emacs M-x: helm-gtags-select . It only shows tags started with English.

[syohex]

Can you see multibyte symbols/functions in terminal ? I suppose GNU global does not support multiple bytes characters.

I tested with following code.

public class Test {
    public static int func() {
        return 10;
    }

    public static int 関数() {
        return 20;
    }   
    public static void main(String[] args) {
        System.out.print("10 + 20 = ");
        System.out.println(func() + 関数());
    }
}

# Create tag files
% gtags 
# Show all symbols
% global -c
Test
func
main

I expect that global -c outputs Test, func, 関数, and main. But it does not output 関数 which contains multiple byte characters. I used latest GNU global.

% global --version
global (GNU GLOBAL) 6.5
Copyright (c) 2015 Tama Communications Corporation
License GPLv3+: GNU GPL version 3 or later <http://www.gnu.org/licenses/gpl.html>
This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

[dingmingxin]

I tested the code you provided, It seems that global -c does not show tags which started with multiple characters. Test using code blow:

public class Test {
    public static int func() {
        return 10;
    }

    public static int 関数() {
        return 20;
    }   

    public static int a関数() {
        return 20;
    }
    public static void main(String[] args) {
        System.out.print("10 + 20 = ");
        System.out.println(func() + 関数());
    }
}

======= result ========

# Create tag files
% gtags 
# Show all symbols
% global -c
Test
a関数
func
main

======== gtags -d ========

 gtags -d GTAGS
#Result:
 __.COMPNAME     __.COMPNAME
 __.COMPRESS     __.COMPRESS ddefine ttypedef
 __.VERSION      __.VERSION 6
Test    1 @n 1 public class @n {
a関数   1 @n 10 @4public static int @n() {
func    1 @n 2 @4public static int @n() {
main    1 @n 13 @4public static void @n(String[] args) {
関数    1 @n 6 @4public static int @n() {

Further more , I used global -c prefix

global -c 関
#Show all symbols started with "関"
関数

I suppose GNU global support multiple byte characters, but the command global -c not show all. I am looking for the perfect way to show all the symbols and I am starting to wonder if this is a small bug of GNU global.

[syohex]

http://cvs.savannah.gnu.org/viewvc/*checkout*/global/global/FAQ?revision=1.52

Q10. Does GLOBAL support multi-byte code set? Which character code set is supported?

A10. GLOBAL doesn't support multi-byte character code set yet. GLOBAL supports only ASCII and ASCII supersets.