Optimize behaviors for inserting quotes and brackets

[Lorilandly]

Describe your feature request

When inserting quotes, a pair of it will be automatically inserted

SpongeBob said    // press "
SpongeBob said "" // a pair of it inserted

This behavior is convenient, but not always. For example

print hello!
      ^          // want to insert parenthesis here
print ()hello!   // this happens
       ^         // then I press `del` to remove one of the parenthesis
print hello!     // both parenthesis disappears???

My suggestion is that a pair of quotes/brackets should only be inserted only if it is at the end of a sentence or if it is in front of a space. If the cursor is in front of a character, only a single quote/bracket should be inserted.

What problem does this feature solve? [optional]

see above

Additional context [optional]

[YalandHong]

Dup of #2534. Please consider adding #2534 to your fixed tickets. Thanks!