emojis: Extract build_default_emoji_aliases().
emojis: Extract build_default_emoji_aliases().

rht/zulip,zulip/zulip,rht/zulip,andersk/zulip,rht/zulip,andersk/zulip,zulip/zulip,andersk/zulip,zulip/zulip,zulip/zulip,andersk/zulip,rht/zulip,zulip/zulip,rht/zulip,zulip/zulip,rht/zulip,rht/zulip,andersk/zulip,zulip/zulip,andersk/zulip,andersk/zulip