In Emacs master ("GNU Emacs 26.0.50 (build 3, x86_64-pc-linux-gnu, X toolkit, Xaw scroll bars) of 2017-07-30", git changeset c8f44e4b; Org mode 9.0.9), I get strikeout text from "+" to "+" in
"+" word "+" (I also see the strikeout with "emacs -Q".) In Emacs 25.2 (Org mode 8.2.10), that line does not get strikeout text. I would not expect emphasis to cross quotation marks. And it makes sections of my MH-E Todo file pretty much unreadable, because of text like So should mh-normalize-folder-name treat "+/" the same as "+", or should its callers special-case "+" (after normalization)? Please restore the (single and double) quotation marks that used to be in the "border" section of org-emphasis-regexp-components. And perhaps the comma should be restored, too? thanks, mike