And further to my last comment, the point is proved.
Claws[-mail] is set in senddoc to use
ATTACH="${ATTACH:-}${ATTACH:+ }$2"
without any reference to encoding.
In Tools.Options, I set email to /usr/bin/claws-mail
and all is well, the document is attached to a draft email in a Compose window.
The use of URI_ENCODE in conjunction with the attachment filename seems to be wrong - though why it caused no problems until recently I do not understand!
And further to my last comment, the point is proved. "${ATTACH: -}${ATTACH: + }$2"
Claws[-mail] is set in senddoc to use
ATTACH=
without any reference to encoding.
In Tools.Options, I set email to /usr/bin/claws-mail
and all is well, the document is attached to a draft email in a Compose window.
The use of URI_ENCODE in conjunction with the attachment filename seems to be wrong - though why it caused no problems until recently I do not understand!