Hi folks,

I'm getting a regex warning when running make update-po from inside po folder.

zh_TW: Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/^(.*)${ <-- HERE ?([A-Z_]+)}?(.*)$/ at /usr/bin/intltool-update line 1064. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/${ <-- HERE ?AC_PACKAGE_NAME}?/ at /usr/bin/intltool-update line 1192. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/${ <-- HERE ?PACKAGE}?/ at /usr/bin/intltool-update line 1193. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/${ <-- HERE ?AC_PACKAGE_VERSION}?/ at /usr/bin/intltool-update line 1194. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/${ <-- HERE ?VERSION}?/ at /usr/bin/intltool-update line 1195. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/${ <-- HERE ?AC_PACKAGE_NAME}?/ at /usr/bin/intltool-update line 1221. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/${ <-- HERE ?PACKAGE}?/ at /usr/bin/intltool-update line 1222. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/${ <-- HERE ?AC_PACKAGE_VERSION}?/ at /usr/bin/intltool-update line 1223. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/${ <-- HERE ?VERSION}?/ at /usr/bin/intltool-update line 1224. Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/${ <-- HERE ?\w+}?/ at /usr/bin/intltool-update line 1225.

I'm using very recent Debian

$ cat /etc/debian_version stretch/sid

Just for reference.

Anyone able to "fix" this? ;) Shall I open a gh issue (I have no clue about the autotools thing)

Cheers, Frank