what does \_. means in vim ? explain to me character by character
Response from chatgpt:
In Vim regular expressions, \_. is a sequence that represents any character including a newline.
Here is an explanation of each character:
The backslash \ is an escape character that is used to indicate that the following character has a special meaning in Vim regular expressions. In this case, it is used to escape the underscore character _.
The underscore _ matches any single character, but it does not match newline characters by default.
The dot . matches any character except newline characters.
Therefore, when you combine the \ and _ characters with the dot . character, you get \_., which matches any character, including newline characters