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authorTodd Gamblin <tgamblin@llnl.gov>2020-10-21 17:04:42 -0700
committerGitHub <noreply@github.com>2020-10-21 17:04:42 -0700
commit16e75ecac097450b2abee7ea0644929b97e45bd7 (patch)
tree67ab597d6cdf04ee32b0bda435950f759c53e8d4 /.coveragerc
parent93e7267dcce46515e61287bfe932e2e5854ef454 (diff)
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shell support: make `which spack` output intelligible (#19256)
Zsh and newer versions of bash have a builtin `which` function that will show you if a command is actually an alias or a function. For functions, the entire function is printed, and our `spack()` function is quite long. Instead of printing out all that, make the `spack()` function a wrapper around `_spack_shell_wrapper()`, and include some no-ops in the definition so that users can see where it was created and where Spack is installed. Here's what the new output looks like in zsh: ```console $ which spack spack () { : this is a shell function from: /Users/gamblin2/src/spack/share/spack/setup-env.sh : the real spack script is here: /Users/gamblin2/src/spack/bin/spack _spack "$@" return $? } ``` Note that `:` is a no-op in Bourne shell; it just discards anything after it on the line. We use it here to embed paths in the function definition (as comments are stripped).
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