# [GUILT] [PATCH] Handle empty patches and patches with only a header.

3 messages from 2012-04-30 to 2012-05-02. Participants: Per Cederqvist, Jeff Sipek.
Thread: https://gitlist.dev/t/30365

## Per Cederqvist, 2012-04-30 10:29

Subject: [GUILT] [PATCH] Handle empty patches and patches with only a header.
Message-ID: <87haw1342k.fsf@opera.com>
URL: https://gitlist.dev/e/87haw1342k.fsf%40opera.com

```
"git apply --numstat" in Git 1.7.10 gives an error message unless the
patch contains a diff, so don't attempt to apply it unless we find a

Signed-off-by: Per Cederqvist <cederp@opera.com>
---
 guilt |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/guilt b/guilt
index 5d619c5..66a671a 100755
--- a/guilt
+++ b/guilt
@@ -622,7 +622,7 @@ push_patch()
 		cd_to_toplevel
 
 		# apply the patch if and only if there is something to apply
-		if [ `git apply --numstat "$p" | wc -l` -gt 0 ]; then
+		if grep -q '^diff ' "$p" && [ `git apply --numstat "$p" | wc -l` -gt 0 ]; then
 			if [ "$bail_action" = abort ]; then
 				reject=""
 			fi
-- 
1.7.10

```

## Jeff Sipek, 2012-04-30 16:48

Subject: Re: [GUILT] [PATCH] Handle empty patches and patches with only a header.
Message-ID: <20120430164841.GG20761@poseidon.cudanet.local>
URL: https://gitlist.dev/e/20120430164841.GG20761%40poseidon.cudanet.local
In-Reply-To: <87haw1342k.fsf@opera.com>

```
On Mon, Apr 30, 2012 at 12:29:55PM +0200, Per Cederqvist wrote:
> "git apply --numstat" in Git 1.7.10 gives an error message unless the
> patch contains a diff, so don't attempt to apply it unless we find a

Find a what?  Such a cliff-hanger! :)

I assume you mean find a '^diff'.

I'll fix up the commit message before applying.

Thanks,

Jeff.

> Signed-off-by: Per Cederqvist <cederp@opera.com>
> ---
>  guilt |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/guilt b/guilt
> index 5d619c5..66a671a 100755
> --- a/guilt
> +++ b/guilt
> @@ -622,7 +622,7 @@ push_patch()
>  		cd_to_toplevel
>  
>  		# apply the patch if and only if there is something to apply
> -		if [ `git apply --numstat "$p" | wc -l` -gt 0 ]; then
> +		if grep -q '^diff ' "$p" && [ `git apply --numstat "$p" | wc -l` -gt 0 ]; then
>  			if [ "$bail_action" = abort ]; then
>  				reject=""
>  			fi
> -- 
> 1.7.10
> 

-- 
Keyboard not found!
Press F1 to enter Setup

```

## Per Cederqvist, 2012-05-02 06:27

Subject: Re: [GUILT] [PATCH] Handle empty patches and patches with only a header.
Message-ID: <4FA0D3D5.5080004@opera.com>
URL: https://gitlist.dev/e/4FA0D3D5.5080004%40opera.com
In-Reply-To: <20120430164841.GG20761@poseidon.cudanet.local>

```
On 04/30/2012 06:48 PM, Jeff Sipek wrote:
> On Mon, Apr 30, 2012 at 12:29:55PM +0200, Per Cederqvist wrote:
>> "git apply --numstat" in Git 1.7.10 gives an error message unless the
>> patch contains a diff, so don't attempt to apply it unless we find a
>
> Find a what?  Such a cliff-hanger! :)
>
> I assume you mean find a '^diff'.

Yes. Initially, I searched for "@@" and the commit message
said "diff hunk", but that heuristic failed if you had a
patch that just changed the mode of a single file.  So I
changed the patch to search for "^diff" instead, and
apparently got distracted while editing the commit message.

     /cederp

> I'll fix up the commit message before applying.
>
> Thanks,
>
> Jeff.
>
>> Signed-off-by: Per Cederqvist<cederp@opera.com>
>> ---
>>   guilt |    2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/guilt b/guilt
>> index 5d619c5..66a671a 100755
>> --- a/guilt
>> +++ b/guilt
>> @@ -622,7 +622,7 @@ push_patch()
>>   		cd_to_toplevel
>>
>>   		# apply the patch if and only if there is something to apply
>> -		if [ `git apply --numstat "$p" | wc -l` -gt 0 ]; then
>> +		if grep -q '^diff ' "$p"&&  [ `git apply --numstat "$p" | wc -l` -gt 0 ]; then
>>   			if [ "$bail_action" = abort ]; then
>>   				reject=""
>>   			fi
>> --
>> 1.7.10
>>
>

```