Get multi-line text in between horizontal delimiter with sed / awk -

i multi-line text in between horizontal delimiter , ignore else before , after delimiter.

an example be:-

some text here before delimiter ---------- line 1 line 2 line 3 line 4 ---------- line 1 line 2 line 3 line 4 ---------- text here after last delimiter 

and get

line 1 line 2 line 3 line 4 line 1 line 2 line 3 line 4 

how do awk / sed regex? thanks.

you can try this.

file: a.awk:

begin { rs = "-+" } { if ( nr > 1 && rt != "" ) { print $0 } } 

run: awk -f a.awk data_file