Any whitespace character that is not a line separator.
非行分隔符的任意空白字符。
A backslash can escape a double quote, or any single whitespace character.
后斜杠可以对双引号或任一空白字符进行转义。
If you try to call the split method on your string, it will split on a whitespace character (like the space).
如果试着在string上调用split方法，它会在空白字符(例如空格)处进行拆分。
The second subexpression, (\s), just means "match any whitespace character and let us refer back to what was matched.
第二个子表达式 (\s)只表示“查找与任何空格字符匹配的字符串，让我们回过来看什么与之匹配”。
One little thing that is a bit subtle is that we bother to match \ \ 2 — which looking above is just a whitespace character.
有一件事比较麻烦，那就是匹配\ \2——它看上去就是一个空格字符。
The search uses a special target pattern (namely: \%column_numv.*\S) to locate the closest preceding line that has a non-whitespace character (\S) at or after (.*) the cursor column (\%column_numv).
搜索使用了一个特殊的目标模式（即 \%column_numv.*\S）来查找最近的一个行，这个行在游标所处的这一列（\%column_numv）或后一列（.*）应当具有一个非空字符（\S）。
Differences may lie in entity structure, attribute ordering, character encoding, or insignificant whitespace.
区别可能在于实体的结构、属性的排列、字符的编码或者不起眼的空白。
All whitespace in character content is retained (excluding characters removed during line feed normalization).
保留字符内容中的所有空白(不包括换行规范化过程中删除的字符)。
It probably has either a single character, OR a blank line OR extra whitespace.
它可能有一个单独的字母或者一个空行，或者一个空格。
It probably has either a single character, OR a blank line OR extra whitespace.
它可能有一个单独的字母或者一个空行，或者一个空格。
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