Give up and accept defeat that bash-completion can't reasonably be audited for unbound parameters. Wrap invocation with disabling strictness, and restore after if it was enabled.
Use new function `_bash_it_homebrew_check()` in existing plugins and completions which look for Homebrew.
Alsö, use `$OSTYPE` instead of calling external `uname` binary.
* lib/helpers: use `$OSTYPE` instead of `$(uname)`
* plugins/osx: use `$OSTYPE` instead of `$(uname)`
* plugins/boot2docker: use `$OSTYPE` instead of `$(uname)`
* plugins/python: use `$OSTYPE` instead of `$(uname)`
* plugins/base: use `$OSTYPE` instead of `$(uname)`
Alsö, use `[[` instead of `[` as the former has less insane argument handling being shell syntax rather than a builtin command that must emulate being a real binary
* completion/brew: use `$OSTYPE` instead of `$(uname)`
* completion/git: use `$OSTYPE` instead of `$(uname)`
Alsö, use `[[` instead of `[`.
* completion/fabric: use `$OSTYPE` instead of `uname`
* theme/demula: use `$OSTYPE` instead of `$(uname)`
* theme/rana: use `$OSTYPE` instead of `$(uname)`
Need to use grep WITHOUT case-sensitivity. Otherwise results such as com.apple.iChat and com.apple.imagent won't be handled correctly and neither one can be completed.
Fixed another comparison that prevented "defaults read com.apple.iChat <complete>" from correctly returning the available defaults keys in that file.
Bash-completion supports pre-defining $BASH_COMPLETION as the path to the main script, so use that if it's defined.
Alsö, don't load homebrew's completion if we've successfully loaded one already.
Instead of using the profile.d version, just invoke the script. The profile.d script preemptively short-circuits if it thinks that bash-completions has already been loaded, which it does by using the $BASH_COMPLETION variable, which is expressly supported by upstream to specify the location of the script...so it will entirely be never loaded if this is set.