Subject: bug#19865: tar-untar-buffer: should honor default-directory

From: Ivan Shmakov <[email-masked]>
Date: Sat, 14 Feb 2015 12:27:45 +0000

>>>>> Eli Zaretskii <[email-masked]> writes:

[…]

 > The doc string of tar-untar-buffer says:

 >   "Extract all archive members in the tar-file into the current
 > directory."

 > which seems to match what it does.  Why isn't default-directory of
 > tar-data-buffer the right choice for doing that?

	Because the default-directory of the tar-mode buffer may be
	changed by the user (with M-x cd or otherwise) with the intent
	of directing tar-untar-buffer to extract the archive members
	into an arbitrary directory, per its docstring.

	Which fails, as the tar-data-buffer’s value for that same
	variable doesn’t get changed at that point.

	Another solution is to wrap with-current-buffer just around
	write-region, so that the rest of the code will still be
	evaluated with the tar-mode buffer being current.

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