Using a \ in gsub

Ruby
1

In IRB if I type the following:
“te/st”.gsub(’/’,’’)
into irb, IRB screws up.
but if I type
File.expand_path($0).gsub(’/’,’\’)
I get te\st. what gives?? how do I get ruby to come up with te\st?

what I am trying to do is this:
File.expand_path($0).gsub(’/’,’’) because with ruby in windows it uses
a / instead of a \ for path names which is screwing my pathnames up…
any suggestions???

2

On 7/15/06, brandon coleman [email protected] wrote:

any suggestions???
File.expand_path($0).gsub(%r{/}) { “\” }

-austin

3

Austin Z. wrote:

On 7/15/06, brandon coleman [email protected] wrote:

any suggestions???
File.expand_path($0).gsub(%r{/}) { “\” }

-austin

that would give me two c:\ruby\ whatever and if I remove a \ it still
gives me an error…

4

On Saturday 15 July 2006 23:05, brandon coleman wrote:

Austin Z. wrote:

On 7/15/06, brandon coleman [email protected] wrote:

any suggestions???

File.expand_path($0).gsub(%r{/}) { “\” }

-austin

that would give me two c:\ruby\ whatever and if I remove a \ it
still gives me an error…

Are you testing this in irb? You should know
that \ is used as escape character inside of Ruby string
literals. Thus if you want an actual backslash in the string,
you have to escape it with another backslash.
irb prints a ruby string literal to stdout, thus you see a
double backslash for every actual backslash in the string.

Try:

puts File.expand_path($0).gsub(%r{/}, “\”)
to see the “real” contents of the resulting string.

BTW: The literal "" gives an error because the backslash
before the second quote tells Ruby to include the quote
in the string instead of interpreting it as string delimiter.