[PATCH 3 of 6] packaging: blindly factor out trap's cleanup function in builddeb
Yuya Nishihara
yuya at tcha.org
Wed Oct 10 09:00:52 EDT 2018
On Tue, 09 Oct 2018 23:29:25 +0200, Antonio Muci via Mercurial-devel wrote:
> # HG changeset patch
> # User muxator <a.mux at inwind.it>
> # Date 1539116185 -7200
> # Tue Oct 09 22:16:25 2018 +0200
> # Node ID 186a840796aae2aa48ca5228fc7225779e3e0ee9
> # Parent f774dfa1595d4935879d2abbb8b4c802d8af0c65
> packaging: blindly factor out trap's cleanup function in builddeb
>
> This commit blindly extracts builddeb's trap routine in a dedicated function.
> While doing so, I think two bugs are exposed, which will be addressed in the
> next commits:
>
> - single quoting around '$CLEANUP' will always evaluate to the literal
> '$CLEANUP' regardless of the variable's value. The "if" will always be true.
> - the removal operation will not expand $PWD (and a variable expansion would
> need double quotes, anyways.
>
> diff --git a/contrib/packaging/builddeb b/contrib/packaging/builddeb
> --- a/contrib/packaging/builddeb
> +++ b/contrib/packaging/builddeb
> @@ -13,6 +13,13 @@ CLEANUP=1
> DISTID=`(lsb_release -is 2> /dev/null | tr '[:upper:]' '[:lower:]') || echo debian`
> CODENAME=`lsb_release -cs 2> /dev/null || echo unknown`
> DEBFLAGS=-b
> +
> +cleanup() {
> + if [ '$CLEANUP' ]; then
> + rm -r '$PWD/debian';
> + fi
> +}
> +
> while [ "$1" ]; do
> case "$1" in
> --distid )
> @@ -44,7 +51,7 @@ while [ "$1" ]; do
> esac
> done
>
> -trap "if [ '$CLEANUP' ] ; then rm -r '$PWD/debian' ; fi" EXIT
Just for the record, $CLEANUP and $PWD would be expanded here, while setting
up the trap. So, yeah, PWD="'" would make it crash.
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