Consider the following command:
vim -u NONE -c 'noremap!<expr> - "‘"' \
-c 'normal i-' \
-c 'wq! result.out'
result.out:
$ cat result.out | hexdump -C
00000000 c3 a2 c2 80 c2 98 0a |.......|
00000007
Tested on vim-7.3 from gentoo repos and on vim-7.3.94 (revision f987220caa57).
Everything works fine if it is not expr mapping or if I replace «"‘"» with
«"\u2018"». Same issue with opening double english quote (u201C) and second
level opening russian quote (u201E).
I encountered this bug* while trying to map ' and " to insert smart
quotes for my notes.vim plug-in. Fortunately I found a simple workaround
(for my use case at least): Don't embed the special characters directly
in the <expr> mapping but call a function that returns the special
characters instead (in my case the function is defined in a different
script but I assume this doesn't matter).
- Peter Odding
*
https://github.com/xolox/vim-notes/blob/3e4ec8fe4b2f68cdedc788f7c503308f618d4865/autoload.vim#L396
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