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Looking for some black magic that will match any string with "weird" characters in it. Standard ASCII characters are fine. Everything else isn't.
This is for sanitizing various web forms.
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RegexBuddy's regex engine is fully Unicode-based starting with version 2.0. 0.
What character in regex is used to match any character except a newline? A metacharacter is a symbol with a special meaning inside a regex. The metacharacter dot ( . ) matches any single character except newline \n (same as [^\n] ).
To match a character having special meaning in regex, you need to use a escape sequence prefix with a backslash ( \ ). E.g., \. matches "." ; regex \+ matches "+" ; and regex \( matches "(" . You also need to use regex \\ to match "\" (back-slash).
The regular expression represents all printable ASCII characters. ASCII code is the numerical representation of all the characters and the ASCII table extends from char NUL (Null) to DEL . The printable characters extend from CODE 32 (SPACE) to CODE 126 (TILDE[~]) .
This gets anything out of the ASCII range
[^\x00-\x7F]
There are still some "weird" characters like x00 (NULL), but they are valid ASCII.
For reference, see the ASCII table
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[^\p{IsBasicLatin}] for what is asked for, [^\x00-\x7F] for concision over self-documentation, or \p{C} for clearing out formatters and controls without hurting other non-ASCIIs (and with greater concision yet).
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