Re: Elisp manual doc on `intangible' is incomplete
Drew Adams wrote: Elisp manual node Special Properties says this about `intangible': If a group of consecutive characters have equal and non-`nil' `intangible' properties, then you cannot place point between them. If you try to move point forward into the group, point actually moves to the end of the group. If you try to move point backward into the group, point actually moves to the start of the group. When the variable `inhibit-point-motion-hooks' is non-`nil', the `intangible' property is ignored. It does not say anything about what the meaning or behavior is if consecutive characters have unequal but non-nil `intangible' values. Why the qualification of having equal values? What is a user to understand about this? Is it not a corallary that the values does not have to be equal? Even consecutive characters with non-nil, but unequal values will form a group behaving the same way. ___ emacs-pretest-bug mailing list emacs-pretest-bug@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-pretest-bug
RE: Elisp manual doc on `intangible' is incomplete
Elisp manual node Special Properties says this about `intangible': If a group of consecutive characters have equal and non-`nil' `intangible' properties, then you cannot place point between them. If you try to move point forward into the group, point actually moves to the end of the group. If you try to move point backward into the group, point actually moves to the start of the group. When the variable `inhibit-point-motion-hooks' is non-`nil', the `intangible' property is ignored. It does not say anything about what the meaning or behavior is if consecutive characters have unequal but non-nil `intangible' values. Why the qualification of having equal values? What is a user to understand about this? Is it not a corallary that the values does not have to be equal? Even consecutive characters with non-nil, but unequal values will form a group behaving the same way. I think it would help to add an explicit statement that you can place point between groups (which are defined as consecutive characters with the same `intangible' value). That is, clarify that you can place point between groups, but not within a group. The text might imply this, but it would be clearer to say it explicitly. That way, the purpose of such groups is made clear. ___ emacs-pretest-bug mailing list emacs-pretest-bug@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-pretest-bug
Re: Elisp manual doc on `intangible' is incomplete
I think it would help to add an explicit statement that you can place point between groups (which are defined as consecutive characters with the same `intangible' value). That is, clarify that you can place point between groups, but not within a group. I clarified that. Thanks. I'd also add a big red warning that this is a very big hammer which tend to break other code not expecting such odd behavior of goto-char (and friends) and should thus be used with a lot of extra care and only when absolutely necessary. Stefan ___ emacs-pretest-bug mailing list emacs-pretest-bug@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-pretest-bug
