I'm quite proud of the ability to do it from a single usable command in a english resembling namespace. Others of its nature off the top of my head which I find useful when hacking at text manipulation and quick pipeline building is:
"before", # pipe, print all text on line before given regexp
"after", # pipe, print all text on line plus str after given regexp
"and", # pipe, print all text and append string after line
"between", # pipe, print text between regexp1 and regexp2
"match", # pipe, print any line matching regexp
"exclude", # pipe, print any line not matching regexp
"matchand", # pipe, print any line matching regexp w/and
"matchbefore", # pipe, print any line matching regexp w/before
all of which are available here.