1 <start> and <end> can take one of these forms:
5 If <start> or <end> is a number, it specifies an
6 absolute line number (lines count from 1).
11 This form will use the first line matching the given
12 POSIX regex. If <end> is a regex, it will search
13 starting at the line given by <start>.
18 This is only valid for <end> and will specify a number
19 of lines before or after the line given by <start>.
22 If ``:<regex>'' is given in place of <start> and <end>, it denotes the range
23 from the first funcname line that matches <regex>, up to the next