RegEx不匹配没有回车的回车

Question

Why is this simple regex not matching a carriage return? For reference, my data is the result of a SQL query and I have replaced linefeed \\n with a single space.

\r

SRUS55 KSLC 082010\r\r HMTSLC\r\r 

Answer 1

There is no \\r in your demo.

This is a newline character, either you were looking for \\\\r or [\\n\\r]+ if your string happens to include newlines.

For a more in-depth answer, see this explanation .