Sed or awk deleting text

i have a file where i need to remove text between the delimiters.
say...

delimiter1 = start_block
delmiter2 = no_block

so...

start_block

<data>

no_block

i am new to using sed, but i think its something like this, with a variation of gump dumped into the curly brackets at the end of the expression. there are also multiple instances of this in a file, i want this to delete these globally. awk is also a favourable opotion here.

sed ':t/start_block/,/no_block/{/no_block/!{$!{N;bt}}/^[0]/d;}'

thanks in advance.

Hi
This is how I'd quickly do this in awk:



Basically, the set_delete variable gets set when finding a "start_block" delimiter, skiping the rest of the file until it reaches an "end_block" delimiter.