@ -146,3 +146,52 @@ the file that rename/copy produces, respectively.
@@ -146,3 +146,52 @@ the file that rename/copy produces, respectively.
3. TAB, LF, and backslash characters in pathnames are
represented as `\t`, `\n`, and `\\`, respectively.
combined diff format
--------------------
git-diff-tree and git-diff-files can take '-c' or '--cc' option
to produce 'combined diff', which looks like this:
------------
diff --combined describe.c
@@@ +98,7 @@@
return (a_date > b_date) ? -1 : (a_date == b_date) ? 0 : 1;
}
- static void describe(char *arg)
-static void describe(struct commit *cmit, int last_one)
++static void describe(char *arg, int last_one)
{
+ unsigned char sha1[20];
+ struct commit *cmit;
------------
Unlike the traditional 'unified' diff format, which shows two
files A and B with a single column that has `-` (minus --
appears in A but removed in B), `+` (plus -- missing in A but
added to B), or ` ` (space -- unchanged) prefix, this format
compares two or more files file1, file2,... with one file X, and
shows how X differs from each of fileN. One column for each of
fileN is prepended to the output line to note how X's line is
different from it.
A `-` character in the column N means that the line appears in
fileN but it does not appear in the last file. A `+` character
in the column N means that the line appears in the last file,
and fileN does not have that line.
In the above example output, the function signature was changed
from both files (hence two `-` removals from both file1 and
file2, plus `++` to mean one line that was added does not appear
in either file1 nor file2). Also two other lines are the same
from file1 but do not appear in file2 (hence prefixed with ` +`).
When shown by `git diff-tree -c`, it compares the parents of a
merge commit with the merge result (i.e. file1..fileN are the
parents). When shown by `git diff-files -c`, it compares the
two unresolved merge parents with the working tree file
(i.e. file1 is stage 2 aka "our version", file2 is stage 3 aka
"their version").