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Go-like defer 'keyword' for shell
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| #!/bin/sh | |
| DEFER= | |
| defer() { | |
| DEFER="$*; ${DEFER}" | |
| trap "{ $DEFER }" EXIT | |
| } |
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As an addendum (since the suggestions I made above are applicable either to bash 5+ or shells with the ksh93
printf %qextension such as bash or zsh):For folks who want both safety and compatibility with
/bin/sh, I'd suggest encapsulating cleanup code in functions (with no arguments -- getting content from variables only) and then passing the names of those functions todefer.rm_tmp_ab() { rm -vf "$TEMP" "/tmp/a b"; }; defer rm_tmp_abf/e.