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git/t/t1003-read-tree-prefix.sh
Victoria Dye cc89331ddc read-tree: explicitly disallow prefixes with a leading '/'
Exit with an error if a prefix provided to `git read-tree --prefix` begins
with '/'. In most cases, prefixes like this result in an "invalid path"
error; however, the repository root would be interpreted as valid when
specified as '--prefix=/'. This is due to leniency around trailing directory
separators on prefixes (e.g., allowing both '--prefix=my-dir' and
'--prefix=my-dir/') - the '/' in the prefix is actually the *trailing*
slash, although it could be misinterpreted as a *leading* slash.

To remove the confusing repo root-as-'/' case and make it clear that
prefixes should not begin with '/', exit with an error if the first
character of the provided prefix is '/'.

Helped-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-01 12:36:00 -08:00

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#!/bin/sh
#
# Copyright (c) 2006 Junio C Hamano
#
test_description='git read-tree --prefix test.
'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success setup '
echo hello >one &&
git update-index --add one &&
tree=$(git write-tree) &&
echo tree is $tree
'
echo 'one
two/one' >expect
test_expect_success 'read-tree --prefix' '
git read-tree --prefix=two/ $tree &&
git ls-files >actual &&
cmp expect actual
'
test_expect_success 'read-tree --prefix with leading slash exits with error' '
git rm -rf . &&
test_must_fail git read-tree --prefix=/two/ $tree &&
git read-tree --prefix=two/ $tree &&
git rm -rf . &&
test_must_fail git read-tree --prefix=/ $tree &&
git read-tree --prefix= $tree
'
test_done