只保留记事本++中每行的第一个单词

Question

例如我有：

hello I am ...
For the reason ...
Not sure if ...

我想保留hello和For并Not摆脱记事本++中每一行中的其余部分。

Answer 1

找：

^([^\s]*)\s.*$

代替：

\1

解释：

^          start of line
([^\s]*)  match and capture every non whitespace character up until
\s         the first whitespace character
.*         consume remainder of line until reaching the
$          end of line