70004Re: Issue 134 in vim: Pasting over visually selected line of new buffer not correctly undoable
- May 22, 2013On Mi, 22 Mai 2013, vim@... wrote:
> Status: NewThis seems to be an issue with saving enough lines for undo. This
> Owner: ----
> Labels: Type-Defect Priority-Medium
> New issue 134 by hkpt...@...: Pasting over visually selected
> line of new buffer not correctly undoable
> Steps to reproduce:
> 1. vim -u NONE -N
> 2. ifoo<ESC>yy
> 3. :ene!
> 4. Vp
> 5. u
> 6. :set modified?
> The buffer should be empty after undoing the paste over the visually
> selected line.
> The buffer retains the last line of what was pasted, even though the
> modified state is set to nomodified. No further undo is possible.
> Version/OS tested:
> 1. VIM - Vi IMproved 7.3, 1-905, NetBSD
> 2. VIM - Vi IMproved 7.3, 1-762, Cygwin
> 3. VIM - Vi IMproved 7.3, 1-46, MS-Windows 32-bit GUI
usually happens before putting by calling op_delete(). Unfortunately,
undo isn't stored for new empty buffers. In theory, op_put should also
store undo information, however it seems to me, that it never ever
stores any information for line wise putting (since the computed size of
the range in u_savecommon() will always be zero). However, the attached
patch fixes it (at least for the case of putting into an empty buffer).
Es lohnt sich nicht, sich an einen Strohhut zu klammern.
-- Heinz Erhardt
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