Re: git log -z still outputting newlines?

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Andreas Schwab <schwab@xxxxxxxxxxxxxx> writes:

> merlyn@xxxxxxxxxxxxxx (Randal L. Schwartz) writes:
>
>> $ git log -z --format='%cE' -5 | od -c
>> 0000000    g   i   t   s   t   e   r   @   p   o   b   o   x   .   c   o
>> 0000020    m  \n   g   i   t   s   t   e   r   @   p   o   b   o   x   .
>> 0000040    c   o   m  \n   g   i   t   s   t   e   r   @   p   o   b   o
>> 0000060    x   .   c   o   m  \n   g   i   t   s   t   e   r   @   p   o
>> 0000100    b   o   x   .   c   o   m  \n   g   i   t   s   t   e   r   @
>> 0000120    p   o   b   o   x   .   c   o   m  \n                        
>> 0000132
>>
>> Why are all those newlines in there?  Bug?  Misfeature?  Feature?  If
>> feature, how do I ensure \0 in my output?  If I add %x00, I get both \0
>> *and* \n in output. :(
>
> --format=format:%cE respects the -z option.

The underlying problem is apparently that --format=%cE triggers the
format-guessing logic, which assumes you meant --pretty=tformat:%cE
instead of --pretty=format:%cE.

It's probably a bug that --pretty=tformat:%cE does not use \0 here.
After all the manual states

  · tformat:

    The tformat: format works exactly like format:, except that it
    provides "terminator" semantics instead of "separator" semantics.

Fixing it may be as easy as the patch below, but I haven't spent much
time on it.

diff --git i/log-tree.c w/log-tree.c
index 34c49e7..44f0268 100644
--- i/log-tree.c
+++ w/log-tree.c
@@ -682,7 +682,7 @@ void show_log(struct rev_info *opt)
 	if (opt->use_terminator) {
 		if (!opt->missing_newline)
 			graph_show_padding(opt->graph);
-		putchar('\n');
+		putchar(opt->diffopt.line_termination);
 	}
 
 	strbuf_release(&msgbuf);

-- 
Thomas Rast
trast@{inf,student}.ethz.ch
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