Can someone please verify for me that I have these characters grouped appropriately, and let me know about the "Unknown" characters (if they are ordinary/allowable or metacharacters/not ordinary/special), please?

I'm trying to figure out what characters we should NOT use (in strings that Talend will be using/calling/whatever) - just to avoid headaches.

Thanks!



Ordinary/Allowable Characters
*Characters that "match themselves" in Regular Expressions
**"Characters other than . $ ^ { [ ( | ) ] } * + ? \ match themselves."  (http://regexlib.com/CheatSheet.aspx)

Character  (Name)
@  (Ampersand)
#  (Number sign)
%  (Percent)
-  (Hyphen, Minus sign)
_  (Underscore)
=  (Equals)
~  (Tilde)
`  (Grave accent)
:  (Colon)
;  (Semicolon)
<  (Less than, Left Angle Bracket)
>  (Greater than, Right Angle Bracket)
,  (Comma)

Metacharacters/Not Ordinary/Special Characters
*These will NOT match themselves
**Unless prefaced by a \
**Except for the backslash (\) character, which must be prefaced by \\\ to come out as a single backslash.  (http://www.amk.ca/python/howto/regex/re … 0000000000)

Character  (Name)
$  (Dollar Sign)
(  (Left Parentheses, Left Round Bracket)
)  (Right Parentheses, Right Round Bracket)
*  (Asterisk)
?  (Question Mark)
\  (Backslash)
^  (Caret)
[  (Left Square Bracket/Brace)
]  (Right Square Bracket/Brace)
{  (Left Curly Bracket/Brace)
}  (Right Curly Bracket/Brace)
|  (Pipe)
+  (Plus)

Unknown
*I don't know which of the two categories, above, the following characters fall into

Character  (Name)
.  (Period, Full stop)
’  (Single quote, Apostrophe)
"  (Double quote)

Sources of the above information:
http://www.regular-expressions.info/reference.html
http://regexlib.com/CheatSheet.aspx
http://www.amk.ca/python/howto/regex/regex.html
http://www.fileformat.info/tool/regex.htm