match_block.awk

#!/usr/bin/awk -f
# https://unix.stackexchange.com/a/495105
# usage: match_block START END MATCH [FILE]
# output a whole block of text enclosed by START and END that contains MATCH
BEGIN {
    pstart=ARGV[1];
    pstop=ARGV[2];
    pmatch=ARGV[3];
    ARGV[1]=ARGV[4];
    ARGC=2;
}
# exp ~ /regexp/ means exp matches the regex
$0 ~ pstart { block = $0; output = 0; next }
{ block = block "\n" $0 }
$0 ~ pmatch { output = 1 }
$0 ~ pstop && output { print block; output = 0 }