tree b67adc13f5faef4b15a273ef1d0939fe53379e90
parent 5e3ca9366bf6d88308d6740fe77a1cdc0204eff9
author Patrick Williams <patrick@stwcx.xyz> 1579278931 -0600
committer Brad Bishop <bradleyb@fuzziesquirrel.com> 1579609689 +0000

setup: support zsh

zsh populates $0 even when sourcing a script.  This caused sourcing
this script to think that it was being executed and it `exit 1`d
the running shell.  Since no sane distribution would ever set /bin/sh
to zsh, the presence of $ZSH_NAME implies that the script is being
sourced.

Tested with both bash and zsh in both modes of operation.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I2843d96a7fdaa46f9ee6edb9031ca9c16ca3bd98