checkout: implement "-" abbreviation, add docs and tests

diff --git a/t/t1503-rev-parse-verify.sh b/t/t1503-rev-parse-verify.sh
index 95244c9bcf54de8cb3584b4022e53a84051d496f..cc6539494737fff8a02460b6cdca3fccad8f770f 100755 (executable)
--- a/t/t1503-rev-parse-verify.sh
+++ b/t/t1503-rev-parse-verify.sh
@@ -23,7 +23,7 @@ add_line_into_file()
     fi
 
     test_tick
-    git-commit --quiet -m "$MSG" $_file
+    git commit --quiet -m "$MSG" $_file
 }
 
 HASH1=