由于搜索是增量式的，因此Emacs会在键入一个字符的时候就开始突出显示匹配项——在本例中，当您按下t键时，会突出显示缓冲区中的所有t字符。
Because the search is incremental, Emacs begins highlighting matches as you type a single character-in this case, when you press the t key, all the t characters in the buffer are highlighted.
为每一行数据所创建的索引成为了计数器，因为每当新的一行数据加进来的时候，这个索引是唯一的增量，这也意味着计数器将与字符串数据的总量同步变化。
The index created for each row of data becomes the count because it was only incremented when a new row of data was found, meaning it is in sync with the amount of data in the string.
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