xgettext error when building on Ubuntu 20.04
$ ./setup.py build
running build
running build_py
'prefix'
copying meld/conf.py-installed -> build/lib/meld/conf.py
running build_scripts
running build_i18n
intltool-update -p -g meld
xgettext: warning: file 'bin/meld' extension '' is unknown; will try C
bin/meld:27: warning: unterminated character constant
bin/meld:38: warning: unterminated character constant
bin/meld:127: warning: unterminated character constant
bin/meld:138: warning: unterminated character constant
bin/meld:145: warning: unterminated string literal
bin/meld:152: warning: unterminated string literal
bin/meld:222: warning: unterminated character constant
xgettext: Non-ASCII string at bin/meld:242.
Please specify the source encoding through --from-code.
intltool-update: meld.po does not exist.
error: command 'intltool-update' failed with exit status 2