How can i convert/replace every newline to ''?

Question

set tabstop=4
set shiftwidth=4
set nu
set ai
syntax on
filetype plugin indent on

I tried this, content.gsub(\"\\r\\n\",\"
\") bu

Answer 1

http://www.ruby-doc.org/core-1.9.3/String.html as it says there gsub expects regex and replacement since "\n\r" is a string you can see in the docs:

if given as a String, any regular expression metacharacters it contains will be interpreted literally, e.g. '\d' will match a backlash followed by ‘d’, instead of a digit.

so you are trying to match "\n\r", you probably want a character class containing \n or \r -[\n\r]

a = <<-EOL
set tabstop=4
set shiftwidth=4
set nu
set ai
syntax on
filetype plugin indent on
EOL
print a.gsub(/[\n\r]/,"
\n");