Q:

how to copy a consecutive set of none empty characters in vim

${BASE}/test/  other_consecutive_none_empty_characters

If the cursor is under the $ sign ,how can I copy "${BASE}/test/" as a whole and paste it 
somewhere else in vim ? I don't want to use the human-eye-letters-counting solution if that is the only solution I'd rather like to hit the keyboard charcter by charcter .

A:

yE would be the most correct solution.  y means "yank" (i.e. copy to buffer), and E - "up to the end of the WORD", which is, up to the next whitespace character.
Personally, I prefer typing yiW - yank inner WORD.  It works the same way, but the cursor may reside anywhere inside the WORD, not just on the dollar sign.

A:

y Yank W WORD:
yW

From :help W:

A WORD consists of a sequence of non-blank characters, separated with white space.  An empty line is also considered to be a WORD.

