There's an escaping bug in Org capture:
1. emacs -Q
2. Evaluate:
(setq org-capture-templates
'(("Z" "org-protocol capture" entry
(file "/tmp/tmp")
"* %?
%(let ((x \"%:annotation\")) (if (string= x \"\") \"\" (concat x
\"\\n\")))%i")))
3. Evaluate (require 'org-protocol)
4. Evaluate to simulate org protocol capture:
(org-protocol-capture '(:template "Z" :body "foo\nbar\n"))
Causes error:
(error "Capture abort: (error Invalid use of ‘\\’ in replacement text)")
org-protocol is used in the example as that's where I encountered it,
but the bug is in org-capture proper.
Note that this works:
(org-protocol-capture '(:template "Z" :body "foo"))
Emacs : GNU Emacs 26.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
of 2018-07-05
Package: Org mode version 9.1.14 (9.1.14-1049-g04641c-elpaplus @
/home/ionasal/.emacs.d/elpa/org-plus-contrib-20181203/)
