Write to stdin, read from stdout of a spawn command (a library)

[Victor Porton]

I want to write to stdin and read from stdout of an OS command I 
spawn without deadlocks. (I have a string to write to stdin and 
want to read its stdout as a string.)

Is there a ready D library for this?

I wrote a C library for this and consider to port to D (either as 
bindings or as a rewrite):

https://github.com/vporton/libcomcom