The patch's basic idea looks good; thanks.

On 05/17/2018 01:46 PM, Bruno Haible wrote:
+gpg_version=`(gpg --version) 2>/dev/null | sed -e '2,$d' -e 's/^[^0-9]*//'`
+gpg_agent_version=`(gpg-agent --version) 2>/dev/null | sed -e '2,$d' -e 
+case "$gpg_agent_version" in
+  2.*)
+    case "$gpg_version" in
+      1.*)

Maybe not bother to invoke gpg --version unless gpg_agent_version is 2? Also, no need for the sed. Something like this perhaps:

  case "`(gpg-agent --version) 2>/dev/null`" in
    *'(GnuPG) 2.'*)
      case "`(gpg --version) 2>/dev/null`" in
        *'(GnuPG) 1.'*)

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