t / t5100 / rfc2047-info-0004on commit t/t1100-commit-tree-options.sh: use the $( ... ) construct for command substitution (cbda02f)
   1Author: Nathaniel Borenstein (םולש ןב ילטפנ)
   2Email: nsb@thumper.bellcore.com
   3Subject: Test of new header generator
   4