The full explanation from stackoverflow:
_$ means the end-of-line that can be used inside a pattern ($ can only be used at the end of the pattern.) Same is with _^ that means the start of a line and can be used anywhere inside the pattern. So, the pattern matches an empty line, a newline, and again an empty line. See: vimdoc.sourceforge.net/htmldoc/pat...
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The full explanation from stackoverflow:
_$ means the end-of-line that can be used inside a pattern ($ can only be used at the end of the pattern.) Same is with _^ that means the start of a line and can be used anywhere inside the pattern. So, the pattern matches an empty line, a newline, and again an empty line. See: vimdoc.sourceforge.net/htmldoc/pat...