On 2011-09-07, Gary Johnson wrote:
> On 2011-09-07, James Vega wrote:
> > On Wed, Sep 07, 2011 at 02:16:59PM -0700, Gary Johnson wrote:
> > > When a buffer is modified by a BufRead autocommand or by a filetype
> > > plugin, 'modified' is not set.
> >
> > This is documented in the text below ":help gzip-example".
> >
> > The commands executed for the BufNewFile, BufRead/BufReadPost,
> > BufWritePost, FileAppendPost and VimLeave events do not set or reset
> > the changed flag of the buffer. ... If you do want the buffer to be
> > marked as modified, set the 'modified' option.
>
> Odd. I would think it would be the other way around: If an
> autocommand modifies a buffer and you don't want it marked as
> modified, set the 'nomodified' option. That would follow the
> principle of least surprise.
>
> I didn't think to look under ":help gzip-example" but I did read
> ":help 'modified'" a couple of times.
>
> I think ":help 'modified'" should include an additional paragraph
> after item 2:
>
> This option is not set when a change is made as the result of a
> BufNewFile, BufRead/BufReadPost, BufWritePost, FileAppendPost or
> VimLeave autocommand event.
>
> Thanks for the explanation and the pointer.
Here's a patch to options.txt that adds a paragraph explaining when
'modified' is not set.
Regards,
Gary
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*** options.txt.orig 2011-09-07 12:39:19.923916000 -0700
--- options.txt 2011-09-08 14:34:44.277968000 -0700
***************
*** 4861,4866 ****
--- 4861,4870 ----
written. A ":set nomodified" command also resets the original
values to the current values and the 'modified' option will be
reset.
+ This option is not set when a change is made to the buffer as the
+ result of a BufNewFile, BufRead/BufReadPost, BufWritePost,
+ FileAppendPost or VimLeave autocommand event. See |gzip-example| for
+ an explanation.
When 'buftype' is "nowrite" or "nofile" this option may be set, but
will be ignored.
