git status / git diff -C not detecting file copy

Hi,

The documentation for git status at http://git-scm.com/docs/git-status implies that it should be able to detect both renames and copies (with the R and C states). The command git diff -C should do it as well.

However I can't get either to detect copies in this simple test case - what is happening?

mkdir test cd test/ git init echo 'Hello World!' > hello.txt echo 'Goodbye World!' > goodbye.txt git add -A git commit -m "Initial commit"

cp hello.txt copied.txt mv goodbye.txt moved.txt git add -A

$ git status --short A copied.txt <------------ NO COPY DETECTED R goodbye.txt -> moved.txt

$ git diff -M -C --summary --cached
 create mode 100644 copied.txt  <------------ NO COPY DETECTED
 rename goodbye.txt => moved.txt (100%)

$ git commit -m Test
$ git diff -M -C --summary HEAD~
  create mode 100644 copied.txt  <------------ NO COPY DETECTED
  rename goodbye.txt => moved.txt (100%)

-Pol