Commit 32e26dc199be48803db4c695c78b9c4843f179f1 causes bootstrap to fail on OS X with:
invoke gl_INIT in ./configure.ac.
Creating lib/unicase/special-casing-table.h for gperf < 3.1
sed: 1: "lib/unicase/special-cas ...": extra characters at the end of l command
./bootstrap: bootstrap_post_import_hook failed
Commit 32e26dc199be48803db4c695c78b9c4843f179f1 causes bootstrap to fail on OS X with:
Per the discussion at https://stackoverflow.com/questions/5694228/sed-in-place-flag-that-works-both-on-mac-bsd-and-linux, the -i option is not part of POSIX Sed, and is apparently implemented differently on BSD/Apple OS X/macOS.