gtags-cscope: wrong caller functions for a shell callee function

[Andrey Butirsky]

Hi,
while I've got working Global for a shell function references,
I still can't get all callers for a function:

$ gtags-cscope -3 liberror

References of this function: liberror

  File                            Function Line
0 10_common.sh                    liberror  18 liberror 'OPTION_PACKAGE'
'set_architecture'
1 10_common.sh                    liberror 119 testvar "$ARCHIVE"
'ARCHIVE' || liberror 'ARCHIVE' 'use_archive_specific_value'
2 10_common.sh                    liberror 140 testvar "$PKG" 'PKG' ||
liberror 'PKG' 'use_package_specific_value'
3 20_archives.sh                  liberror 255 liberror
'OPTION_CHECKSUM' 'archive_integrity_check'
4 30_archive-extraction.sh        liberror  74 liberror 'ARCHIVE_TYPE'
'extract_data_from'
5 30_icons.sh                     liberror  78 testvar "$app" 'APP' ||
liberror 'app' 'icons_get_from_package'
6 30_icons.sh                     liberror 118 liberror 'extension'
'icon_extract_png_from_file'
7 30_installation-instructions.sh liberror  61 liberror 'OPTION_PACKAGE'
'print_instructions'
8 30_installation-instructions.sh liberror  90 liberror 'OPTION_PACKAGE'
'print_instructions'
9 30_launchers.sh                 liberror  37 testvar "$app" 'APP' ||
liberror 'app' 'write_bin'
a 30_launchers.sh                 liberror 309 testvar "$app" 'APP' ||
liberror 'app' 'write_desktop'
b 30_packages.sh                  liberror  23 testvar "$pkg" 'PKG' ||
liberror 'pkg' 'write_metadata'
c 30_packages.sh                  liberror  49 liberror 'OPTION_PACKAGE'
'write_metadata'
d 30_packages.sh                  liberror  67 testvar "$pkg" 'PKG' ||
liberror 'pkg' 'build_pkg'
e 30_packages.sh                  liberror  86 liberror 'OPTION_PACKAGE'
'build_pkg'
f 30_packages_arch.sh             liberror 352 liberror
'OPTION_COMPRESSION' 'pkg_build_arch'
g 30_packages_deb.sh              liberror 244 liberror
'OPTION_COMPRESSION' 'pkg_build_deb'
h 99_init.sh                      liberror 258 liberror 'OPTION_PACKAGE'
"$0"


Anything we can do about it?