Umesh testing 123:
foo check.nolink bar...
foo check.this. bar...
foo check@this.com bar...
foo check.this.com bar...
foo test@example.comd bar...
foo test@example.com bar...
foo mailto:foo@bar.com bar...
foo foo@bar.com bar...
foo irc.example.org bar...
foo irc://example.org bar...
foo ftp.example.com bar...
foo ftp://example.org bar...
foo example.org bar...
foo example.in bar...
foo example.co.in bar...
foo example.comd bar...
foo example.com bar...
foo www.example.com bar...
foo www.example.comd bar...
foo ftp://example.com bar...
foo https://example bar...
foo https://example.com bar...
foo https://example.comd bar...
foo https://www.example.comd bar...
foo http://example bar...
foo http://example.com bar...
foo http://example.com:80 bar...
foo http://example.com:80/path/ bar...
foo http://example.com:80/path/file.txt bar...
foo http://[2001:0db8:85a3:08d3:1319:8a2e:0370:7348] bar... ([IPv6 literal])
foo http://[2001:0db8:85a3:08d3:1319:8a2e:0370:7348]/file.txt bar... ([IPv6] with path)