动态显示红色的特定字符: [英] specific chararacters in red colour dynamically:

问题描述

我需要动态地用红色指定"_"之前的2个字符，无论字符在"_"之前和之后出现什么.
例如:附加根原因. 尽管我增加了"_"之前和之后的字符数，但此处的字符"ch"应为红色.

请提供建议.

Hi,

I need to specify the 2 characters before "_" in red color dynamically whatever may be the chracters appear before and after "_".
Eg:Attach_rootcause.
Here the character "ch" should be in red color though i increased the number of characters before and after "_".

Kindly advise.

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