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[bug-diffutils] bug#20929: problem with diff -B and incomplete lines
From: |
Paul Eggert |
Subject: |
[bug-diffutils] bug#20929: problem with diff -B and incomplete lines |
Date: |
Mon, 29 Jun 2015 09:58:42 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 |
Thanks for the bug report. I'm forwarding this to bug-diffutils so that it gets
a proper bug number.
-------- Forwarded Message --------
Subject: Bug in diff
Date: Mon, 29 Jun 2015 16:00:48 +0100
From: Ricardo Anido <address@hidden>
To: address@hidden
If the last line of a file has a sole character and no '\n', using the flag
-B makes diff miss the difference between files. The difference is
correctly reported using flags -b or -w. Better explained by an example,
below. Notice that the last line of tmp2 has only the character 'X':
--------------------
address@hidden:~$ cat tmp1
a
b
c
address@hidden:~$ cat tmp2
a
b
c
address@hidden:~$ od -cx tmp1
0000000 a \n b \n c \n
0a61 0a62 0a63
0000006
address@hidden:~$ od -cx tmp2
0000000 a \n b \n c \n X
0a61 0a62 0a63 0058
0000007
address@hidden:~$ diff -B tmp1 tmp2
address@hidden:~$ diff -b tmp1 tmp2
3a4
X
\ No newline at end of file
address@hidden:~$
--------------------
Best regards, thanks for the amazing work on gnu!
---
Ricardo Anido
IC-UNICAMP
Av. Albert Einstein, 1251
13083-852 Campinas SP
Tel. (19) 3521 5863 Fax. (19) 3521 5847
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Paul Eggert <=