On Mon, Dec 11, 2017 at 09:47:24PM +0100, Johannes Sixt wrote:
> Am 11.12.2017 um 16:50 schrieb lars.schnei...@autodesk.com:
> >From: Lars Schneider <larsxschnei...@gmail.com>
> >
> >Git and its tools (e.g. git diff) expect all text files in UTF-8
> >encoding. Git will happily accept content in all other encodings, too,
> >but it might not be able to process the text (e.g. viewing diffs or
> >changing line endings).
> >
> >Add an attribute to tell Git what encoding the user has defined for a
> >given file. If the content is added to the index, then Git converts the
> >content to a canonical UTF-8 representation. On checkout Git will
> >reverse the conversion.
> >
> >Reviewed-by: Patrick Lühne <patr...@luehne.de>
> >Signed-off-by: Lars Schneider <larsxschnei...@gmail.com>
> >---
> >
> >Hi,
> >
> >here is a WIP patch to add text encoding support for files encoded with
> >something other than UTF-8 [RFC].
> >
> >The 'encoding' attribute is already used to view blobs in gitk. That
> >could be a problem as the content is stored in Git with the defined
> >encoding. This patch would interpret the content as UTF-8 encoded and
> 
> This will be a major drawback for me because my code base stores text files
> that are not UTF-8 encoded. And I do use the existing 'encoding' attribute
> to view the text in git-gui and gitk. Repurposing this attribute name is not
> an option, IMO.

Just to confirm my missing knowledge here:
Does this mean, that git-gui and gitk can decode/reencode
the content of a file/blob, when the .gitattributes say so ?

If yes, would it make sense to enhance the "git diff" instead ?
"git diff --encoding" will pick up the commited encoding from
.attributes, convert it into UTF-8, and run the diff ?
We actually could enhance the "git diff" output with a single
line saying
"Git index-encoding=cp1251"
or so, which can be picked up by "git apply".

The advantage would be that we could continue to commit in UTF-16
as before, and avoid the glitches with .gitattributes, that Peff
pointed out.

Does this make sense ?

> 
> >it would try to reencode it to the defined encoding on checkout > Plus,
> >many repos define the attribute very broad (e.g. "*
> encoding=cp1251").

Is this a user mistake ?

> >These folks would see errors like these with my patch:
> >     error: failed to encode 'foo.bar' from utf-8 to cp1251
> 
> -- Hannes

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