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MDEV-13187 incorrect backslash parsing in clients

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also cover USE and other built-in commands
This commit is contained in:
Sergei Golubchik
2018-01-23 23:19:09 +01:00
parent 8637931f11
commit e2da680c51
3 changed files with 68 additions and 2 deletions
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7
client/mysql.cc
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@@ -4559,8 +4559,11 @@ static char *get_arg(char *line, get_arg_mode mode)
}
for (start=ptr ; *ptr; ptr++)
{
if ((*ptr == '\\' && ptr[1]) || // escaped character
(!short_cmd && qtype && *ptr == qtype && ptr[1] == qtype)) // quote
/* if short_cmd use historical rules (only backslash) otherwise SQL rules */
if (short_cmd
? (*ptr == '\\' && ptr[1]) // escaped character
: (*ptr == '\\' && ptr[1] && qtype != '`') || // escaped character
(qtype && *ptr == qtype && ptr[1] == qtype)) // quote
{
// Remove (or skip) the backslash (or a second quote)
if (mode != CHECK)