This script is meant to be an adapter for GNOME Evolution to GnuPG. When encrypting e-mails with Evolution 3.22.6, the recipient is specified by Evolution in the form "<user@examle.com>". For the usage of the GnuPG 2.2.12 option `auto-key-locate keyserver` the user-id must be in the form "user@example.com". This script simply removes the angle b…

evolution-gnupg-auto-key-locate-interoperability-patch.sh

#!/bin/bash

# About this script
# =================
# 
# This script is meant to be an adapter for GNOME Evolution to GnuPG.
# When encrypting e-mails with Evolution 3.22.6, the recipient is specified by
# Evolution in the form "<user@examle.com>". For the usage of the GnuPG 2.2.12 
# option `auto-key-locate keyserver` the user-id must be in the form 
# "user@example.com" [1]. This script simply removes the angle brackets from
# the recipient specification and forwards all arguments to `gpg`.
# [1]: https://dev.gnupg.org/T4726
#
# How to use
# ==========
#
# Direct Evolution to use this script instead of gpg directly. Therefor use 
# `dconf-editor` to set `org.gnome.evolution-data-server.camel-gpg-binary` to 
# the absolute path of this script.

# Set general error checking measures for scripting
set -o errexit # Used to exit upon error, avoiding cascading errors

# Test the number of arguments
if [ $# -lt 1 ]
then
    echo "Invalid number of arguments!"
    exit 1
fi

# Get temporary file
temporaryFile=`mktemp`
trap "rm $temporaryFile" EXIT # remove file when finished

# Find addresses in the form "\<local@domain\>" [2] and remove angle brackets.
# [2]: https://tools.ietf.org/html/rfc5321#section-2.3.11
printf " %q" "$@" | sed  --regexp-extended 's| -r \\<(\S+@\S+)\\>| -r \1|' > $temporaryFile

# Run GnuPG with modified arguments
xargs --arg-file=$temporaryFile gpg

⛔ This script is obsolete since GnuPG 2.2.19 (see fix)!