Re: Regex to detect file name

It's probably beating a dead horse at this point, but this looks like what you're trying to do, with explainations:

# original
if($view_tag =~ m/[^A-Za-z0-9_\-\.]/) {

# corrected
if($view_tag =~ m/^[A-Za-z0-9][\w.-]*/) {

# to anchor the match at the beginning,
# the ^ comes immediately after the first /:
m/^[A-Z ...   

# match the first character
[A-Za-z0-9]

# matching subsequent characters:
[\w.-]*
 
# \w is the same as [A-Za-z0-9_]
# . does not need to be escaped when inside brackets
# put - last inside brackets, otherwise it may indicate a range 
# the quantifier * matches 0 or more instances of the characters
[download]

Comment on Re: Regex to detect file name Download Code

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Re^2: Regex to detect file name by Laurent_R (Canon) on Jul 06, 2018 at 21:46 UTC
`# corrected if($view_tag =~ m/^[A-Za-z0-9][\w.-]*/) {` [download] I think that you need to add an end-of-string anchor at the end of the pattern to prevent matching if there are some unwanted or spurious characters after the last character matching `[\w.-]`.	[reply] [d/l] [select]