^start of line
httpthe literal text http (case sensitive) s?optionally matches the literal s (11510 / 1638 / 7316) (case sensitive)
:the literal : (5810 / 728 / 3A16)
\/the literal / (4710 / 578 / 2F16)
\/the literal / (4710 / 578 / 2F16)
Group 1(((?!desktop).*\.)?(githubusercontent|githubstatus|github)\.(?!io|myshopify|blog|community)) Group 2((?!desktop).*\.)? ?repeats the group contents below at most once:
Negative Lookahead(?!desktop) desktopthe literal text desktop (case sensitive) .*any character (except for line terminators), repeated any number of times
\.the literal . (4610 / 568 / 2E16)
Group 3(githubusercontent|githubstatus|github) 1st Alternativegithubusercontent githubusercontentthe literal text githubusercontent (case sensitive) 2nd Alternativegithubstatus githubstatusthe literal text githubstatus (case sensitive) githubthe literal text github (case sensitive) \.the literal . (4610 / 568 / 2E16)
Negative Lookahead(?!io|myshopify|blog|community) iothe literal text io (case sensitive) myshopifythe literal text myshopify (case sensitive) blogthe literal text blog (case sensitive) communitythe literal text community (case sensitive) .*any character (except for line terminators), repeated any number of times
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string
g modifier: global. Finds all matches instead of stopping after the first