Alexander Barkov cfe5ee90c8 MDEV-22043 Special character leads to assertion in my_wc_to_printable_generic on 10.5.2 (debug) ...

The code did not take into account that:
- U+005C (backslash) can occupy more than mbminlen characters (e.g. in sjis)
- Some character sets do not have a code for U+005C (e.g. swe7)

Adding a new function my_wc_to_printable into MY_CHARSET_HANDLER to
cover all special cases easier.

2020-05-09 16:01:30 +04:00

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