vim regex the pipe is not escaped in a execute command -

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i trying create operator pending mapping markdown headers, exercise in learning vim script hard way here line vimrc:

autocmd filetype markdown :onoremap ih :<c-u>execute "normal! ?\\(^==\\+$\\|^--\\+$\\)\r:nohlsearch\rkvg_"<cr>

i have error

e486: pattern not found: \(^==\+$|^--\+$\)

i tried modifications have same result, it's pipe never escaped !

inside :map command, use <bar> instead of pipe symbol:

autocmd filetype markdown :onoremap ih :<c-u>execute "normal! ?\\(^==\\+$\\<bar>^--\\+$\\)\r:nohlsearch\rkvg_"<cr>

that long :normal command (that executes search, ex command, , more commands, separated \r) ugly. you'd better use :call search(...) instead of ? command, , factor out multiple commands :function.


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