japaric/rust-by-example — pull request #158 by alxgnon (2014-07-03 21:58:26+00:00)
Title: Fix `make book` on Mac

The BSD version of sed included on Mac OSX has very primitive argument parsing. When running `make book`, `fix-edit-button.sh`'s sed call fails because the `-i` flag tries to associate with the sed script. My fix checks if `--version` succeeds to decide if it should use the BSD or GNU syntax.