How I can convert string -
text = "test test1 \n \n \n \n \n \n \n \n \n \n \n \n \n \n test2 \n"
to
test test1 \n\n\n\n\n\n\n\n\n\n\n\n\n\n test2\n
I tried use next - text.gsub(/\s\n/, '\n'), but it added additional slash -
test test1\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n\\n test2\\n
Use double quotes, instead of single:
text.gsub(/\s\n/, "\n")
With single quotes, \n has the meaning of \ and n, one after another. With double, it is interpreted as new line.
test1
test2 is expected to be removed. If he indeed wants to have the space, he should further clarify which spaces should be removed and which - not.I expect that either the space after "test1" is to be removed as well or the space after "test2" is not to be removed. @ndn assumed the former was intended. If the second interpretation applies, you could do the following:
r = /
(?<=\n) # match \n in a positive lookbehind
\s # match a whitespace character
(?=\n) # match \n in a positive lookahead
/x # extended/free-spacing regex definition mode
text.gsub(r,"")
#=> "test test1 \n\n\n\n\n\n\n\n\n\n\n\n\n\n test2 \n"
or:
text.gsub(/\n\s(?=\n)/, "\n")
