Replacement between markers

README.md

Replacement between markers

I'm looking for a sed command that replace a part of the target.md file identified by the <!-- start:block --> and <!-- end:block --> markers.

This part of the file has to be replaced either with replaceA.md or replaceB.md, but the marker have to be there at the end, so we can start the process again.

You can clone this gist to get the files:

git clone https://gist.github.com/01f134ee6e22c52066b9089094ec31ef.git replace-between-markers

Files

target.md

Some text before

<!-- start:block -->
These lines should
be replaced from the
content of another file
(replace.md).
<!-- end:block -->

Some text after

replaceA.md

Yes! Replacement text
without the 2 markers
in it.

replaceb.md

<!-- start:block -->
Yes! Replacement text
with the 2 markers
in it.
<!-- end:block -->

replaceA.md

Yes! Replacement text without the 2 markers in it.

replaceB.md

Yes! Replacement text with the 2 markers in it.

target.md

Some text before

These lines should be replaced from the content of another file (replace.md).

Some text after

awk '/<!-- start:block -->/{p=1;print;system("cat replaceA.md");next} /<!-- end:block -->/{p=0} !p' target.md > temp && mv temp target.md