Junio C Hamano <gitster@xxxxxxxxx> writes:
> Thomas Gummerer <t.gummerer@xxxxxxxxx> writes:
>
>> diff --git a/Documentation/git.txt b/Documentation/git.txt
>> index aec3726..bc9eeea 100644
>> --- a/Documentation/git.txt
>> +++ b/Documentation/git.txt
>> @@ -712,6 +712,11 @@ Git so take care if using Cogito etc.
>> index file. If not specified, the default of `$GIT_DIR/index`
>> is used.
>>
>> +'GIT_INDEX_VERSION'::
>> + This environment variable allows the specification of an index
>> + version for new repositories. It won't affect existing index
>> + files. By default index file version 3 is used.
>> +
>
> This is half-correct, isn't it? In-code variable may say version 3
> but we demote it to version 2 unless we absolutely need to use the
> version 3 ugliness.
Yes, you're right, to be correct we should say [23] instead of 3 here
maybe?
>> diff --git a/read-cache.c b/read-cache.c
>> index 3f735f3..3993e12 100644
>> --- a/read-cache.c
>> +++ b/read-cache.c
>> @@ -1223,6 +1223,22 @@ static struct cache_entry *refresh_cache_entry(struct cache_entry *ce, int reall
>>
>> #define INDEX_FORMAT_DEFAULT 3
>>
>> +static unsigned int get_index_format_default()
>> +{
>> + char *envversion = getenv("GIT_INDEX_VERSION");
>> + if (!envversion) {
>> + return INDEX_FORMAT_DEFAULT;
>> + } else {
>> + unsigned int version = strtol(envversion, NULL, 10);
>
> If we are using strtol() to parse it carefully, we should make sure
> it parses to the end by giving a non-NULL second argument and
> checking where the parsing stopped.
Thanks, makes sense, will fix it in the re-roll.
>> diff --git a/t/t1600-index.sh b/t/t1600-index.sh
>> new file mode 100755
>> index 0000000..37fd84d
>> --- /dev/null
>> +++ b/t/t1600-index.sh
>> @@ -0,0 +1,24 @@
>> +#!/bin/sh
>> +
>> +test_description='index file specific tests'
>> +
>> +. ./test-lib.sh
>> +
>> +test_expect_success 'setup' '
>> + echo 1 >a
>> +'
>> +
>> +test_expect_success 'out of bounds GIT_INDEX_VERSION issues warning' '
>> + (
>> + GIT_INDEX_VERSION=1 &&
>> + export GIT_INDEX_VERSION &&
>> + git add a 2>&1 | sed "s/[0-9]//" >actual.err &&
>> + sed -e "s/ Z$/ /" <<-\EOF >expect.err &&
>> + warning: GIT_INDEX_VERSION set, but the value is invalid.
>> + Using version Z
>> + EOF
>> + test_i18ncmp expect.err actual.err
>> + )
>> +'
>
> If we already have an index in version N when this test starts, what
> should happen?
I think we shouldn't print anything, since we won't change the file
format. I'll add another test for that.
> Will queue on 'pu', with some suggested fixups.
Thanks, I think both fixups in 'pu' make sense, so I'll include them in
the re-roll.
> Thanks.
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