Regex for substituting backslash?

Question

I have this:

a = "whut.\\nErgh"

What I want to achieve is:

"whut.\nErgh" #sub 2 backslashes with 1 backslash

I tried this:

a.gsub(/\\\\/) { '\\' }

but it still returns me two backslashes.

Could someone please explain what went wrong here?

Answer 1

There are not two backslashes in "whut.\\nErgh" but just one.

"\\" is just one backslash char, the first \ is used to escape the backslash in a string.

If you want to convert \\n to a newline char, then use:

"whut.\\nErgh".gsub(/\\n/, "\n")

Answer 2

Try this :

"whut.\\nErgh".gsub(/\\n/, "")