Regex matching all but not empty

Question

A line has to be validated through regex,

1. line can contain any characters, spaces, digits, floats.

2. line should not be blank

I tried this:

[A-Za-z0-9~`!#$%^&*()_+-]+ //thinking of all the characters

Any alternative solution will be helpful

Answer 1

Try this to match a line that contains more than just whitespace

/.*\S.*/

This means

/ = delimiter
.* = zero or more of anything but newline
\S = anything except a whitespace (newline, tab, space)

so you get
match anything but newline + something not whitespace + anything but newline

if whitespace only line counts as not whitespace, then replace the rule with /.+/, which will match 1 or more of anything.

Answer 2

try:

.+

The . matches any character, and the plus requires least one.