Re: [RFC PATCH v2 3/4] t7006-pager.sh: more lenient trace checking

[Phillip Wood <phillip.wood123@gmail.com>]

Hi Emily

On 23/04/2021 10:54, Phillip Wood wrote:
> Hi Emily
> [...]
>> diff --git a/t/t7006-pager.sh b/t/t7006-pager.sh
>> index 0e7cf75435..ac2d91d56b 100755
>> --- a/t/t7006-pager.sh
>> +++ b/t/t7006-pager.sh
>> @@ -676,7 +676,9 @@ test_expect_success TTY 'git returns SIGPIPE on 
>> early pager exit' '
>>           test_terminal git log
>>       fi &&
>> -    grep child_exit trace.normal >child-exits &&
>> +    PAGER_CHILD_ID=$(grep pager-used trace.normal | \
>> +             sed -n "s/child_start\[\([0-9]\+\)\].*/\1/p") &&
> 
> If you want to save a process you could use sed to do the job of the 
> grep command. I think this should do it
> 
> sed -n -e "/child_exit/ {" -e "s/child_start\[\([0-9]\+\)\].*/\1/p" -e "}"

I must have been half asleep when I wrote that, there is no need for the 
braces and the initial match is wrong it should be

sed -n "/pager-used/s/child_start\[\([0-9]\+\)\].*/\1/p"


Best Wishes

Phillip

>> +    grep -F "child_exit["$PAGER_CHILD_ID"]" trace.normal >child-exits &&
> 
> Why is $PAGER_CHILD_ID unquoted?
> 
> Best Wishes
> 
> Phillip
> 
>>       test_line_count = 1 child-exits &&
>>       grep " code:0 " child-exits &&
>>       test_path_is_file pager-used
>> @@ -697,7 +699,9 @@ test_expect_success TTY 'git returns SIGPIPE on 
>> early pager non-zero exit' '
>>           test_terminal git log
>>       fi &&
>> -    grep child_exit trace.normal >child-exits &&
>> +    PAGER_CHILD_ID=$(grep pager-used trace.normal | \
>> +             sed -n "s/child_start\[\([0-9]\+\)\].*/\1/p") &&
>> +    grep -F "child_exit["$PAGER_CHILD_ID"]" trace.normal >child-exits &&
>>       test_line_count = 1 child-exits &&
>>       grep " code:1 " child-exits &&
>>       test_path_is_file pager-used
>> @@ -718,7 +722,9 @@ test_expect_success TTY 'git discards pager 
>> non-zero exit without SIGPIPE' '
>>           test_terminal git log
>>       fi &&
>> -    grep child_exit trace.normal >child-exits &&
>> +    PAGER_CHILD_ID=$(grep pager-used trace.normal | \
>> +             sed -n "s/child_start\[\([0-9]\+\)\].*/\1/p") &&
>> +    grep -F "child_exit["$PAGER_CHILD_ID"]" trace.normal >child-exits &&
>>       test_line_count = 1 child-exits &&
>>       grep " code:1 " child-exits &&
>>       test_path_is_file pager-used
>> @@ -739,7 +745,9 @@ test_expect_success TTY 'git discards nonexisting 
>> pager without SIGPIPE' '
>>           test_terminal git log
>>       fi &&
>> -    grep child_exit trace.normal >child-exits &&
>> +    PAGER_CHILD_ID=$(grep does-not-exist trace.normal | \
>> +             sed -n "s/child_start\[\([0-9]\+\)\].*/\1/p") &&
>> +    grep -F "child_exit["$PAGER_CHILD_ID"]" trace.normal >child-exits &&
>>       test_line_count = 1 child-exits &&
>>       grep " code:127 " child-exits &&
>>       test_path_is_file pager-used
>> @@ -760,7 +768,9 @@ test_expect_success TTY 'git attempts to page to 
>> nonexisting pager command, gets
>>           test_terminal git log
>>       fi &&
>> -    grep child_exit trace.normal >child-exits &&
>> +    PAGER_CHILD_ID=$(grep does-not-exist trace.normal | \
>> +             sed -n "s/child_start\[\([0-9]\+\)\].*/\1/p") &&
>> +    grep -F "child_exit["$PAGER_CHILD_ID"]" trace.normal >child-exits &&
>>       test_line_count = 1 child-exits &&
>>       grep " code:-1 " child-exits
>>   '
>> @@ -780,7 +790,9 @@ test_expect_success TTY 'git returns SIGPIPE on 
>> propagated signals from pager' '
>>           test_terminal git log
>>       fi &&
>> -    grep child_exit trace.normal >child-exits &&
>> +    PAGER_CHILD_ID=$(grep pager-used trace.normal | \
>> +             sed -n "s/child_start\[\([0-9]\+\)\].*/\1/p") &&
>> +    grep -F "child_exit["$PAGER_CHILD_ID"]" trace.normal >child-exits &&
>>       test_line_count = 1 child-exits &&
>>       grep " code:143 " child-exits &&
>>       test_path_is_file pager-used
>>
>