twitter/bootstrap — pull request #4620 by mgalgs (2012-08-23 04:33:37+00:00)
Title: Use the -e switch to echo on platforms where it is needed

Some implementations of echo (like /bin/echo on Linux, as well as the
bash builtin echo command) require the `-e` switch to enable
interpretation of escape sequences (like \n, \033[32m, etc).