Regex: special case ^ and $ require special treatment

[lifenjoiner]

a847154

1. Continuous search after found, requires one extra move;
2. Select All does not work yet.

[zufuliu]

^ and $ seems is working, what's the test case?

[lifenjoiner]

Yes, your example works, and the special cases are:

1. only ^ or $, to quickly select the beginning or ending of lines, especially the ending;
2. ^ and $, to select empty lines.

"Find All" works, other actions don't.

[zufuliu]

empty matches are skipped:

notepad4/src/Edit.cpp

Lines 5480 to 5489 in 1060547

	if ((findFlag & SCFIND_REGEXP) && iSelCount == 1) {
	const char ch = *text;
	if (ch == '^' || ch == '$') {
	const Sci_Line lineCount = SciCall_GetLineCount();
	matchCount = lineCount - (ch == '^');
	UpdateStatusBarCache(StatusItem_Find);
	UpdateStatusbar();
	return;
	}
	}

notepad4/src/Edit.cpp

Lines 5590 to 5595 in 1060547

	const Sci_Position iSelCount = ttf.chrgText.cpMax - iPos;
	if (iSelCount == 0) {
	// empty regex
	cpMin = SciCall_PositionAfter(iPos);
	continue;
	}