Cause: [[ is a bashism, not portable sh. Recent bash, when run as /bin/sh do not know [[ for the sake of compliance.
Solution: either live with bash and say it (accept this pull request).
Or review the Makefile, remove all bashism, test with strict conditions, etc.
Fixes https://github.com/dagwieers/asciidoc-odf/issues/40
Cause:
[[is a bashism, not portable sh. Recent bash, when run as/bin/shdo not know[[for the sake of compliance. Solution: either live with bash and say it (accept this pull request). Or review the Makefile, remove all bashism, test with strict conditions, etc. Fixes https://github.com/dagwieers/asciidoc-odf/issues/40