protected boolean isEnabledFindStep(ActionContext ctx) {
		return !findDialog.txtFind.getText().isEmpty();
	}
The search algorithm should work such that col == -1 works the same as the end of
the previous line -- or no result if its the first line.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/terminal/TerminalProvider.java