Based on the rationale given I think the author could have used GNU m4. While I'm definitely not fond of the syntax, it can get the job done. I don't think many

Based on the rationale given I think the author could have used GNU m4. While I'm definitely not fond of the syntax, it can get the job done. I don't think many (if any) projects use it (excluding autoconf). Here's the manual on one page https://www.gnu.org/software/m4/manual/m4.html https://www.gnu.org/software/m4/manual/m4.html An m4 example, similar with the snippet within the README define(`foo', `$1' `$2') foo(hello, world) define(`bar', hello) foo(`bar', world) esyscmd(`./executable-path') esyscmd(`cat /tmp/file')