Documentation / Regular Expressions / Anchors ^ and $
Anchors ^ and $
Anchors match at the beginning of a file, a line, or a word. All of them are “zero-width”, that is, they don't match any characters in the source file.
| ^^ | The beginning of a file |
| $$ | The end of a file |
| ^ | The beginning of a line |
| $ | The end of a line |
| \< | The beginning of a word |
| \> | The end of a word |
For example:
| ^From | A line starting with “From” |
| ing\> | A word ending with “ing” |
| ^abc$ | A line containing only “abc” |
| ^#include | A line starting with “#include” |
| ^$ | An empty line |
| ^^$$ | An empty file |