[PATCH] import-tars: ignore the global PAX header

["Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>]

From: Johannes Schindelin <johannes.schindelin@gmx.de>

Git's own `git archive` inserts that header, but it often gets into the
way of `import-tars.perl` e.g. when a prefix was specified (for example
via `--prefix=my-project-1.0.0/`, or when downloading a `.tar.gz` from
GitHub releases): this prefix _should_ be stripped.

Let's just skip it.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
    Ignore the global PAX header in import-tars.perl
    
    This problem came up in Pacman-related work, where PKGBUILD definitions
    would reference the tarballs downloaded from GitHub, and patches would
    be applied on top. To work on those patches efficiently (e.g. when an
    upgrade to a new version of the project no longer lets those patches
    apply), I need to be able to import those tarballs into playground
    worktrees and work on them. I like to use 
    contrib/fast-import/import-tars.perl for that purpose, but it really
    needs to strip the prefix, otherwise it is too tedious to work with it.

Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-577%2Fdscho%2Fimport-tars-skip-pax-header-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-577/dscho/import-tars-skip-pax-header-v1
Pull-Request: https://github.com/gitgitgadget/git/pull/577

 contrib/fast-import/import-tars.perl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/contrib/fast-import/import-tars.perl b/contrib/fast-import/import-tars.perl
index e800d9f5c9c..d50ce26d5d9 100755
--- a/contrib/fast-import/import-tars.perl
+++ b/contrib/fast-import/import-tars.perl
@@ -139,6 +139,8 @@
 			print FI "\n";
 		}
 
+		next if ($typeflag eq 'g'); # ignore global header
+
 		my $path;
 		if ($prefix) {
 			$path = "$prefix/$name";

base-commit: b4374e96c84ed9394fed363973eb540da308ed4f
-- 
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