[Issue 15460] Ddoc: merge the opening comment "<!-- Generated by Ddoc from filename.dd -->" into the default definition of DDOC

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=15460

--- Comment #4 from Adam D. Ruppe <destructionator at gmail.com> ---
well looks like i had to make clean because I had stuff left over from when it
was still C++ for last time I did a ddoc PR.

But still, ugh.

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