tree e7973e1c98891828e612521e0a6f25842883b116
parent d0897a79cd3779a8307f427940c2b02b326d9f52
author Daniel Martí <mvdan@mvdan.cc> 1664661583 +0100
committer Daniel Martí <mvdan@mvdan.cc> 1668159766 +0000

cmd/txtar: support listing files

This is useful when wanting to round-trip a txtar file by extracting its
files into a new directory and then write the same archive again. We
can't simply read the directory to write the files to a txtar archive
again, as we'll likely just end up with sorted filenames.

That is not often what one wants; for example, for Go tests, it's often
best to keep go.mod at the top. It's also useful to keep an order that
makes sense for the human consuming the file in context.

Now, the roundtrip can be done correctly by listing the files and using
that list again when writing a txtar file back. Note that no variable
expansion happens when listing files, as otherwise it would be
impossible to keep the original variables in our round-trip scenario.

Change-Id: I384cca7ac4ce4dbfb0d3d0f437687b5a2f6298eb
Reviewed-on: https://go-review.googlesource.com/c/exp/+/437635
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>