How can I set the grep after context to be “until the next blank line”?

Question

With grep I know how to set the context to a fixed number of lines. Is it possible to show a context based on an arbitrary string condition, like set after-context to \"until th

Answer 1

It sounds like you need sed:

sed -n '/pattern/,/^$/p' file

Don't print by default (-n). For lines that match /pattern/ up to an empty line /^$/, print.