git permalink oneliner breakdown

git-permalink-oneliner-explanation.md

! #tell git that this isn't an internal alias, but should be run as a bash command
f() { #create a bash function called "f"
echo \" #print the string we're creating (added backslash now in breakdown for syntax highlighting to look better)
	https:// #start the url with "https://"
	$( #start a subcommand
		git config #git config makes it easy to read repository settings
			--get #get a setting...
			remote.origin.url #...called remote.origin.url
		| #pipe the output of the git config command to...
		grep #...grep
			--color=never #...don't print with colors
			-o #...print only what was matched
			-E #use extended grep regex syntax
			'github.com[:/][^\\.]+' #this is the pattern grep will look for. It removes git@ and .git from the url
		| #pipe the output of grep...
		sed #...to sed
			s/\\:/\\\\// #which using this (heavily backspace) escaped pattern replaces : with /
	) #end the subcommand
	/commit/ #this is the next part of the url
	$( #start another subcommand
		git rev-parse @{u} #this prints out the last commit hash on the current branch's upstream branch, i.e. the hash of the last pushed commit in your current branch
	) #end subcommand
\" #end the string we're echoing (backslash added here too)
; #end the line with semicolon, as we've got a oneliner
}; #close the function
open $(f) #call open, with the output of the function