标记后的第一个字母大写

在Notepad++中,在“查找和替换”对话框中启用正则表达式模式,然后查找:

(?<=<p>)(.)

并替换为:

\U\1

要解释要匹配的模式:

(?<=a)b   # A positive lookbehind, i.e. match all b that immediately follow a, but
          #   don't match the "a" itself.
(.)       # Find any character (i.e. "."), and capture it.
(?<=a)(.) # Find any character that immediately follows a, and capture it.

更换:

\1   # The first captured substring in each match.
\Ux  # Convert x to upper case.
\U\1 # Convert the first captured substring in each match to upper case.

请注意,这将尝试转换第一个 性格 至大写。如果 <p> 以及你想要大写的字母,你可以这样做:

(?<=<p>)([^A-Za-z]*)(.) 

# [^x]       Matches any character that is not x.
# [^A-Za-z]  Matches any character that is not one of the upper case 
#              or lower case letters.
# x*         Matches zero or more consecutive x.
# [^A-Za-z]* Matches zero or more consecutive characters that are not
#              upper case or lower case letters.

并替换为

\1\U\2 # The first captured substring (any non-letter characters
       #   that immediately follow <p>) followed by the second captured
       #   substring (the first letter that appears after <p>), which 
       #   is converted to upper case.

要找到的模式是:“匹配(和捕获,在捕获组1中)紧跟其后的任何非字母字符 <p> ,然后匹配(和捕获,在捕获组2中)紧跟在非字母字符之后的第一个字符(当然,必须是我们希望确保为大写的字母) * ,当后面没有非字母字符时,也会产生匹配 <p> ,在这种情况下,捕获组1将只保存一个空字符串。

/<p>\s*(.){1}/

这将与 <p> 标记后跟任何类型的空格0次或更多次,后跟任何字符1次,它将记住1个字符,以便以后使用它将其转换为大写。