Regex for whitespace plus vertical bar

Ruby
#1

I am trying to quote arguments that have whitespace or a pipe (vertical
bar character = | ) in them. Why doesn’t this work? What does work?

if arg.index(/[\s|]/)
…

end

#2

Hi –

On Sat, 29 Jul 2006, Robert La ferla wrote:

I am trying to quote arguments that have whitespace or a pipe (vertical
bar character = | ) in them. Why doesn’t this work? What does work?

if arg.index(/[\s|]/)
…

end

It seems to work OK:

irb(main):008:0> “abc|”.index(/[\s|]/)
=> 3
irb(main):009:0> " abc".index(/[\s|]/)
=> 0

What results are you getting?

David

#3

On Jul 28, 2006, at 21:56, Robert La ferla wrote:

I am trying to quote arguments that have whitespace or a pipe
(vertical
bar character = | ) in them. Why doesn’t this work? What does work?

if arg.index(/[\s|]/)

| is a reserved character in regexes for disjunction, i.e. /a|b/
matches a or b, where a and b are arbitrary regexes.

This ought to work for your purposes, I think:

if arg.index(/[\s|]/)

matthew smillie.

#4

Matthew S. wrote:

| is a reserved character in regexes for disjunction,
Not in a character class.

“foo|bar” =~ /[|]/
=> 3

#5

On 7/28/06, Robert La ferla [email protected] wrote:

I am trying to quote arguments that have whitespace or a pipe (vertical
bar character = | ) in them. Why doesn’t this work? What does work?

if arg.index(/[\s|]/)
…

end

Seems to work for me:

$ irb

re=/[\s|]/
=> /[\s|]/

re.match(‘kldfslkd’)
=> nil

re.match(‘df |sdf’)
=> #MatchData:0x4098995c

Regards,
Jason
http://blog.casey-sweat.us/