On 31/07/11 02:16, Mariano Guerra wrote:
hi, I'm Mariano, long time vim user, lately I've been interested in
understanding vim internals, my main doubt right now are the following:
* which data structure is used to handle a document?
try running cscope over the Vim source, then look for "buffer"
* how are undos handled?
That depends on the u flag in 'cpoptions' (see :help cpo-u) and on the
'undofile' option. Not sure about the details.
* how are marks handled?
They are remembered as properties of the buffer and stored in the
viminfo file (if 'viminfo' is nonempty and its "apostrophe" sub-option,
which must always be there if the option is nonempty, has a nonzero
value). Uppercase marks are visible across files, lowercase marks are
for the current file only.
* is there any resource other than source code to read about this topics?
I don't think so; but you can use cscope and/or Exuberant Ctags to help
you analyze the source.
About ctags: If on a Unix-like OS, use "make tags" in the top-level
Makefile. For Windows etc., the same may work but I'm less sure.
Thereafter you can use the :tag command (q.v.), or Ctrl-] just as in
helpfiles
About cscope: see http://vim.wikia.com/wiki/Cscope
if not a brief description and a pointer to the correct part of the
source code would be enough to start with.
thanks!
Best regards,
Tony.
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