Description of problem:
On Fedora rawhide with perl 5.26, intltool-update crashes

$ srcdir=../../po /usr/bin/intltool-update -m
Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/\${ <-- HERE ?PACKAGE_NAME}?/ at /usr/bin/intltool-update line 1082, <CONF> line 61.

Adding a '\' before the { in the regex fixes the error message, but unclear if that's the correct semantic fix.


Version-Release number of selected component (if applicable):
intltool-0.51.0-8.fc26.noarch

How reproducible:
Always

Steps to Reproduce:
1.Run intltool-update
2.
3.

Actual results:


Expected results:


Additional info: