git/t/t3910-mac-os-precompose.sh
Alexander Rinass 90a78b83e0 diff: run arguments through precompose_argv
When running diff commands, a pathspec containing decomposed
unicode code points is not converted to precomposed unicode form
under Mac OS X, but we normalize the paths in the index and the
history to precomposed form on that platform.  As a result, the
pathspec would not match and no diff is shown.

Unlike many builtin commands, the "diff" family of commands do
not use parse_options(), which is how other builtin commands
indirectly call precompose_argv() to normalize argv[] into
precomposed form on Mac OSX.  Teach these commands to call
precompose_argv() themselves.

Note that precomopose_argv() normalizes not just paths but all
command line arguments, so things like "git diff -G $string"
when $string has the decomposed form would first be normalized
into the precomposed form and would stop hitting the same string
in the decomposed form in the diff output with this change.

It is not a problem per-se, as "log" family of commands already use
parse_options() and call precompose_argv()--we can think of this
change as making the "diff" family of commands behave in a similar
way as the commands in the "log" family.

Signed-off-by: Alexander Rinass <alex@fournova.com>
Helped-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-05-13 14:35:49 -07:00

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#!/bin/sh
#
# Copyright (c) 2012 Torsten Bögershausen
#
test_description='utf-8 decomposed (nfd) converted to precomposed (nfc)'
. ./test-lib.sh
if ! test_have_prereq UTF8_NFD_TO_NFC
then
skip_all="filesystem does not corrupt utf-8"
test_done
fi
# create utf-8 variables
Adiarnfc=$(printf '\303\204')
Adiarnfd=$(printf 'A\314\210')
Odiarnfc=$(printf '\303\226')
Odiarnfd=$(printf 'O\314\210')
AEligatu=$(printf '\303\206')
Invalidu=$(printf '\303\377')
#Create a string with 255 bytes (decomposed)
Alongd=$Adiarnfd$Adiarnfd$Adiarnfd$Adiarnfd$Adiarnfd$Adiarnfd$Adiarnfd #21 Byte
Alongd=$Alongd$Alongd$Alongd #63 Byte
Alongd=$Alongd$Alongd$Alongd$Alongd$Adiarnfd #255 Byte
#Create a string with 254 bytes (precomposed)
Alongc=$AEligatu$AEligatu$AEligatu$AEligatu$AEligatu #10 Byte
Alongc=$Alongc$Alongc$Alongc$Alongc$Alongc #50 Byte
Alongc=$Alongc$Alongc$Alongc$Alongc$Alongc #250 Byte
Alongc=$Alongc$AEligatu$AEligatu #254 Byte
test_expect_success "detect if nfd needed" '
precomposeunicode=$(git config core.precomposeunicode) &&
test "$precomposeunicode" = true &&
git config core.precomposeunicode true
'
test_expect_success "setup" '
>x &&
git add x &&
git commit -m "1st commit" &&
git rm x &&
git commit -m "rm x"
'
test_expect_success "setup case mac" '
git checkout -b mac_os
'
# This will test nfd2nfc in git diff
test_expect_success "git diff f.Adiar" '
touch f.$Adiarnfc &&
git add f.$Adiarnfc &&
echo f.Adiarnfc >f.$Adiarnfc &&
git diff f.$Adiarnfd >expect &&
git diff f.$Adiarnfc >actual &&
test_cmp expect actual &&
git reset HEAD f.Adiarnfc &&
rm f.$Adiarnfc expect actual
'
# This will test nfd2nfc in git diff-files
test_expect_success "git diff-files f.Adiar" '
touch f.$Adiarnfc &&
git add f.$Adiarnfc &&
echo f.Adiarnfc >f.$Adiarnfc &&
git diff-files f.$Adiarnfd >expect &&
git diff-files f.$Adiarnfc >actual &&
test_cmp expect actual &&
git reset HEAD f.Adiarnfc &&
rm f.$Adiarnfc expect actual
'
# This will test nfd2nfc in git diff-index
test_expect_success "git diff-index f.Adiar" '
touch f.$Adiarnfc &&
git add f.$Adiarnfc &&
echo f.Adiarnfc >f.$Adiarnfc &&
git diff-index HEAD f.$Adiarnfd >expect &&
git diff-index HEAD f.$Adiarnfc >actual &&
test_cmp expect actual &&
git reset HEAD f.Adiarnfc &&
rm f.$Adiarnfc expect actual
'
# This will test nfd2nfc in readdir()
test_expect_success "add file Adiarnfc" '
echo f.Adiarnfc >f.$Adiarnfc &&
git add f.$Adiarnfc &&
git commit -m "add f.$Adiarnfc"
'
# This will test nfd2nfc in git diff-tree
test_expect_success "git diff-tree f.Adiar" '
echo f.Adiarnfc >>f.$Adiarnfc &&
git diff-tree HEAD f.$Adiarnfd >expect &&
git diff-tree HEAD f.$Adiarnfc >actual &&
test_cmp expect actual &&
git checkout f.$Adiarnfc &&
rm expect actual
'
# This will test nfd2nfc in git stage()
test_expect_success "stage file d.Adiarnfd/f.Adiarnfd" '
mkdir d.$Adiarnfd &&
echo d.$Adiarnfd/f.$Adiarnfd >d.$Adiarnfd/f.$Adiarnfd &&
git stage d.$Adiarnfd/f.$Adiarnfd &&
git commit -m "add d.$Adiarnfd/f.$Adiarnfd"
'
test_expect_success "add link Adiarnfc" '
ln -s d.$Adiarnfd/f.$Adiarnfd l.$Adiarnfc &&
git add l.$Adiarnfc &&
git commit -m "add l.Adiarnfc"
'
# This will test git log
test_expect_success "git log f.Adiar" '
git log f.$Adiarnfc > f.Adiarnfc.log &&
git log f.$Adiarnfd > f.Adiarnfd.log &&
test -s f.Adiarnfc.log &&
test -s f.Adiarnfd.log &&
test_cmp f.Adiarnfc.log f.Adiarnfd.log &&
rm f.Adiarnfc.log f.Adiarnfd.log
'
# This will test git ls-files
test_expect_success "git lsfiles f.Adiar" '
git ls-files f.$Adiarnfc > f.Adiarnfc.log &&
git ls-files f.$Adiarnfd > f.Adiarnfd.log &&
test -s f.Adiarnfc.log &&
test -s f.Adiarnfd.log &&
test_cmp f.Adiarnfc.log f.Adiarnfd.log &&
rm f.Adiarnfc.log f.Adiarnfd.log
'
# This will test git mv
test_expect_success "git mv" '
git mv f.$Adiarnfd f.$Odiarnfc &&
git mv d.$Adiarnfd d.$Odiarnfc &&
git mv l.$Adiarnfd l.$Odiarnfc &&
git commit -m "mv Adiarnfd Odiarnfc"
'
# Files can be checked out as nfc
# And the link has been corrected from nfd to nfc
test_expect_success "git checkout nfc" '
rm f.$Odiarnfc &&
git checkout f.$Odiarnfc
'
# Make it possible to checkout files with their NFD names
test_expect_success "git checkout file nfd" '
rm -f f.* &&
git checkout f.$Odiarnfd
'
# Make it possible to checkout links with their NFD names
test_expect_success "git checkout link nfd" '
rm l.* &&
git checkout l.$Odiarnfd
'
test_expect_success "setup case mac2" '
git checkout master &&
git reset --hard &&
git checkout -b mac_os_2
'
# This will test nfd2nfc in git commit
test_expect_success "commit file d2.Adiarnfd/f.Adiarnfd" '
mkdir d2.$Adiarnfd &&
echo d2.$Adiarnfd/f.$Adiarnfd >d2.$Adiarnfd/f.$Adiarnfd &&
git add d2.$Adiarnfd/f.$Adiarnfd &&
git commit -m "add d2.$Adiarnfd/f.$Adiarnfd" -- d2.$Adiarnfd/f.$Adiarnfd
'
test_expect_success "setup for long decomposed filename" '
git checkout master &&
git reset --hard &&
git checkout -b mac_os_long_nfd_fn
'
test_expect_success "Add long decomposed filename" '
echo longd >$Alongd &&
git add * &&
git commit -m "Long filename"
'
test_expect_success "setup for long precomposed filename" '
git checkout master &&
git reset --hard &&
git checkout -b mac_os_long_nfc_fn
'
test_expect_success "Add long precomposed filename" '
echo longc >$Alongc &&
git add * &&
git commit -m "Long filename"
'
test_expect_failure 'handle existing decomposed filenames' '
echo content >"verbatim.$Adiarnfd" &&
git -c core.precomposeunicode=false add "verbatim.$Adiarnfd" &&
git commit -m "existing decomposed file" &&
>expect &&
git ls-files --exclude-standard -o "verbatim*" >untracked &&
test_cmp expect untracked
'
# Test if the global core.precomposeunicode stops autosensing
# Must be the last test case
test_expect_success "respect git config --global core.precomposeunicode" '
git config --global core.precomposeunicode true &&
rm -rf .git &&
git init &&
precomposeunicode=$(git config core.precomposeunicode) &&
test "$precomposeunicode" = "true"
'
test_done