AutoHotkey Community

Posted: **12 Feb 2020, 11:51**

How to check if it contains characters other than letters, numbers and some ASCII special characters?

a-z A-Z
0-9
space!#$%&'()\+,-.:;=@[\]^_`{}

Such as checking if it contains :
/ * ? " < > |
Non-ASCII characters

Code: Select all

str := "a1*"

MsgBox % InStr(str, "[^ !#\$%&'\(\)\+,-\.:;=@\[\\\]\^_`\{}~0-9a-zA-Z]")

What went wrong with this regular expression?

Posted: **12 Feb 2020, 13:11**

What went wrong with your regular expression is you used InStr instead of RegExMatch.

Code: Select all

str := "a1*"

MsgBox % RegExMatch(str, "[^ !#\$%&'\(\)\+,-\.:;=@\[\\\]\^_`\{}~0-9a-zA-Z]")

Posted: **13 Feb 2020, 04:30**

Oh, I made a stupid mistake.
However, I found that when the regular expression is written as follows, it will not match "*". Should escape sequences be followed in regular expressions as well?

Code: Select all

str := "a1*"

MsgBox % RegExMatch(str, "[^ !#\$%&'\(\)\+,-\.0-9:;=@A-Z\[\\\]\^_`a-z\{}~]")

Escape Sequences
https://www.autohotkey.com/docs/commands/_EscapeChar.htm

Posted: **13 Feb 2020, 05:03**

Yes, the regular expression functions see the backtick character as an escape character. If you want to include it as a character of its own, use two in a row.

Posted: **19 Feb 2020, 10:54**

Thank you. You're right.

Code: Select all

MsgBox % RegExMatch(str, "[^ !#\$%&'\(\)\+,-\.0-9:;=@A-Z\[\\\]\^_``a-z\{}~]")

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How to check if it contains characters other than letters, numbers and some ASCII special characters?

How to check if it contains characters other than letters, numbers and some ASCII special characters?

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