[10477] in Athena Bugs
vax 7.4H: patch
daemon@ATHENA.MIT.EDU (cfields@Athena.MIT.EDU)
Thu Apr 29 14:54:22 1993
From: cfields@Athena.MIT.EDU
To: bugs@Athena.MIT.EDU
Date: Thu, 29 Apr 93 14:54:06 EDT
System name: get-a-life
Type and version: CVAXSTAR 7.4H
Display type: SM
What were you trying to do?
I was trying to patch an empty file to contain one
newline. Here's an example:
Make the files...
athena% touch foo
athena% echo -n "\^J" > bar1
Generate the diffs...
athena% diff -c foo bar1 > pat
Now get ready to patch. bar1 is the file to be patched.
athena% mv foo bar1
athena% patch < pat
Hmm... Looks like a new-style context diff to me...
The text leading up to this was:
--------------------------
|*** foo Thu Apr 29 14:39:09 1993
|--- bar1 Thu Apr 29 14:39:18 1993
--------------------------
(Creating file foo...)
Patching file foo using Plan A...
Hunk #1 succeeded at 1.
done
What's wrong:
Patch created "foo" and put a newline in it, instead of
patching "bar1" to include a newline.
You may wonder why my files are called "foo" and "bar1"
instead of "foo" and "bar". This is because patch works
correctly if the two filenames are of the same length.
Hopefully the bug isn't also dependent on moon phase.
What should have happened:
Patch should have core dumped rather than producing an
incorrect result.
Please describe any relevant documentation references:
patch(1), _The Hitchhiker's Guide to the Galaxy_
