Passing string as input raises "sed: unsupported command e" on Alpine

[adnan360]

I tried something like this on a GitLab build based on Alpine Linux:

BODY_SOURCE=$(echo "$BODY_SOURCE" | sh inc/markdown.bash/markdown.sh /dev/stdin)

It works on a Void Linux machine just fine, but not on Alpine. It gave me a:

sed: unsupported command e

It seems to be doing this on this line of markdown.sh:

while grep '^[\*\+\-] ' "$temp_file" >/dev/null

[escoand]

Had the same problem. The solution is to install a full sed with apk add sed.