Regular Expressions 101

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/
£([^#£@]|#.)*@
/
gm
£ matches the character £ with index 16310 (A316 or 2438) literally (case sensitive)
1st Capturing Group
([^#£@]|#.)*
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data
1st Alternative
[^#£@]
Match a single character not present in the list below
[^#£@]
#£@
matches a single character in the list #£@ (case sensitive)
2nd Alternative
#.
# matches the character # with index 3510 (2316 or 438) literally (case sensitive)
. matches any character (except for line terminators)
@ matches the character @ with index 6410 (4016 or 1008) literally (case sensitive)
Global pattern flags
g modifier: global. All matches (don't return after first match)
m modifier: multi line. Causes ^ and $ to match the begin/end of each line (not only begin/end of string)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/
gm

Test String

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