如何在pdf中修复方形框? [英] how to fix square boxes in pdf?

问题描述

在我的pdf中查找正则表达式时，在许多地方，我看到某些字符已被方形框替换，方形框是ASCII码

while going through my pdf for regular expressions, and in many places i see that some characters are replaced by square boxes which is some ASCII code

有什么办法可以解决这个问题?

Is there any way i can fix this?

我已经检查了此链接

http://www.tableausoftware.com/support/knowledge-base/square-boxes
http://acrobatusers.com/tutorials/text-matching-regular-expressions

和其他人，但没有找到任何解决方案...问题在于方形框的外观...

and others but did not find any solution... aatched is how the square boxes look...

推荐答案

为

As stema said, this has nothing to do with regular expressions.

与"pdf转义序列"无关，因为PDF使用二进制安全文本编码.

Neither is it about some "pdf escape sequences", as PDF uses binary safe text encodings.

通常显示这些方块以代替某些字符，这些字符没有用所选字体表示.通常，排版软件会用更细的" Unicode替代品来代替某些引号或其他字符.但是字体没有这些字符.

These square blocks are usually shown in place of some characters that doesn't have a representation in the chosen font. Often, it happens that the typesetting software replaces some quotes or other characters with a 'nicer' Unicode alternative; but the font doesn't have those characters.

您可以尝试将PDF中的文本复制/粘贴到其他文档中并替换字体，甚至可以使用某些PDF编辑工具(

You could try to copy/paste the text from the PDF into some other document and replace the font, or even use some PDF editing tools (enfocus PitStop is one of the most popular; it's cheap but not free) to replace the font with another more complete.

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