maybe you should escape the dots
\.
catwalk
2009-11-05 08:51:43
+1 thanks for pointing that out!
Galilyou
2009-11-05 09:11:47
+2
A:
Problems observed with your regex
1. "." is a meta character in regex. It matches "anything". You should escape it to match the dot. Like this .
2. \w is a character class which includes small letters, caps, numbers and underscore. This explains why "1234" passed.
Try this
^[a-zA-Z]\w*(\.[-\w]+){1,2}$
Jass
2009-11-05 09:00:54
Just one small nitpick: most regex implementations do not let the DOT match `\r` and `\n` unless the DOT-ALL option `(?s)` is enabled.
Bart Kiers
2009-11-05 09:04:58
Thanks for the explanation, but your Regex didn't match anything of the patterns above!
Galilyou
2009-11-05 09:09:48
@7alwagy not sure what you mean? i tried on regexpal.com and it did match perfectly. Do you like have this list in a file and doing a one by one search to match them or something ? then you should probably get rid of the ^,$
Jass
2009-11-05 09:13:19
Specifically something like (john.al-smith) was not matched by your regex.
Galilyou
2009-11-05 09:14:44
Here's a list of the unmatched patterns (using RegexDesigner): "john.al-caboon", "john.smith.1", "john.al-smith.1"
Galilyou
2009-11-05 09:17:52
i dint know john.1a was valid. fixed it a bit now. for john.al-smith is that like with brackets? it will match without the brackets for sure
Jass
2009-11-05 09:18:58
try it at www.regexpal.com. You could test it and make minor modifications to suit your needs.
Jass
2009-11-05 09:20:15
@Jasss, I did try at regexpal, and it's working! Don't know what's wring with RegexDesigner. Will try again with RegexCoach. Thanks anyways +1
Galilyou
2009-11-05 09:21:34
A:
Use this expression: \w+\S*?\.\w+\S*
I read your definition as:
- at least one character
- mandatory dot
- at least one character
This ran successfully using .NET RegexOptions.ECMAScript and RegexOptions.Multiline
Rubens Farias
2009-11-05 09:04:35