derive-deftly 1.11.2

An easy way to write derive() macros
Documentation 
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#!/bin/bash
#
usage() {
    cat >&2 <<'END'
Usage:
    maint/update-versions [VERSION]

Updates versions to VERSION, if supplied, and then runs
    cargo fetch --offline  # to update the lockfile
    maint/update-bizarre
to refresh lockfiles etc.

It may be necessary to update macros/semver.rs too - see
  template_export_semver_check_func_macro
END
}
# We're not using cargo-edit or cargo-version because our
# multi-version tests make things weird.

# CARGO='nailing-cargo -Eu' maint/update-versions VERSION
# CARGO='nailing-cargo -Eu' maint/update-versions

set -e -o pipefail

case "$#/$1" in
    0/) ;;
    1/1.*) ;;
    *) usage; exit 12;;
esac

version=$1

process () {
    perl -i~ -wpe '
        use strict;
        my $eligible = qr{"([=^]?)(?!0\.0\.)\d+\.\d+\.\d+"};
	my $new = "'"$version"'";
        if (m{^version *= }) {
            s{$eligible}{"$1$new"};
        } elsif (m{^derive-deftly.*.*path = }) {
            s{\bversion *= *$eligible}{version = "$1$new"}g;
        }
    ' "$1"
}

if [ "x$version" != x ]; then
    process Cargo.toml
    process macros/Cargo.toml
    process tests/Cargo.toml
    process tests/pub-export/pub-a/Cargo.toml
    process tests/stderr/Cargo.toml
fi

${CARGO-cargo} fetch
maint/update-minimal-versions
maint/update-docs-navbars