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fetch-configlet: print instructions for installing completions #647

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fetch-configlet: print instructions for installing completions #647

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f851af6
Detect user's shell and print instructions for tab completion
glennj Jul 12, 2022
7456ac0
fetch-configlet: add space after redirect operator
ee7 Aug 6, 2022
f54d7e3
fetch-configlet: add newline
ee7 Aug 6, 2022
6f68b53
fetch-configlet: use `configlet completion`
ee7 Aug 6, 2022
932cecd
fetch-configlet: add different instructions for fish
ee7 Aug 6, 2022
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40 changes: 40 additions & 0 deletions scripts/fetch-configlet
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,44 @@ get_download_url() {
cut -d'"' -f4
}

# get the user's shell (as portably as possible)
# and print out the command to enable tab completion
emit_completion_command() {
local shell file

if command -v getent > /dev/null; then
shell=$(getent passwd "${USER}" | cut -d: -f7)
elif command -v finger > /dev/null; then
shell=$(finger "${USER}" | sed -nE '/.*Shell: / { s///; s/ .*//; p; }')
elif [[ -f /etc/passwd ]]; then
shell=$(awk -F: -v u="${USER}" '$1 == u {print $7}' /etc/passwd)
fi

if [[ -z "${shell}" ]]; then
# could not detect the shell
return
fi

file="bin/completions/configlet.$(basename "${shell}")"
if [[ -f "${file}" && -r "${file}" ]]; then
case "${shell}" in
bash)
echo "To enable tab completions, run:"
echo " configlet completion -s ${shell} | source"
;;
fish)
echo "To enable tab completions for the current session, run:"
echo " configlet completion -s ${shell} | source"
echo "To enable tab completions for every session, run:"
echo " configlet completion -s ${shell} > ~/.config/fish/completions/configlet.fish"
;;
zsh)
: # is there more to do here than the above?
;;
esac
fi
}

main() {
if [[ -d ./bin ]]; then
output_dir="./bin"
Expand All @@ -69,6 +107,8 @@ main() {
esac

rm -f "${output_path}"

emit_completion_command
}

main