Make fetch-pack a builtin with an internal API

diff --git a/git-checkout.sh b/git-checkout.sh
index 6b6facfd5a224afca735d4693d304726f4032e6f..17f43927aa7b766c1ba28150c4945fac7ff3e132 100755 (executable)
--- a/git-checkout.sh
+++ b/git-checkout.sh
@@ -6,8 +6,8 @@ SUBDIRECTORY_OK=Sometimes
 require_work_tree
 
 old_name=HEAD
-old=$(git-rev-parse --verify $old_name 2>/dev/null)
-oldbranch=$(git-symbolic-ref $old_name 2>/dev/null)
+old=$(git rev-parse --verify $old_name 2>/dev/null)
+oldbranch=$(git symbolic-ref $old_name 2>/dev/null)
 new=
 new_name=
 force=
@@ -29,9 +29,9 @@ while [ "$#" != "0" ]; do
                shift
                [ -z "$newbranch" ] &&
                        die "git checkout: -b needs a branch name"
-               git-show-ref --verify --quiet -- "refs/heads/$newbranch" &&
+               git show-ref --verify --quiet -- "refs/heads/$newbranch" &&
                        die "git checkout: branch $newbranch already exists"
-               git-check-ref-format "heads/$newbranch" ||
+               git check-ref-format "heads/$newbranch" ||
                        die "git checkout: we do not like '$newbranch' as a branch name."
                ;;
        "-l")
@@ -57,19 +57,20 @@ while [ "$#" != "0" ]; do
                usage
                ;;
        *)
-               if rev=$(git-rev-parse --verify "$arg^0" 2>/dev/null)
+               if rev=$(git rev-parse --verify "$arg^0" 2>/dev/null)
                then
                        if [ -z "$rev" ]; then
                                echo "unknown flag $arg"
                                exit 1
                        fi
-                       new="$rev"
                        new_name="$arg"
-                       if git-show-ref --verify --quiet -- "refs/heads/$arg"
+                       if git show-ref --verify --quiet -- "refs/heads/$arg"
                        then
+                               rev=$(git rev-parse --verify "refs/heads/$arg^0")
                                branch="$arg"
                        fi
-               elif rev=$(git-rev-parse --verify "$arg^{tree}" 2>/dev/null)
+                       new="$rev"
+               elif rev=$(git rev-parse --verify "$arg^{tree}" 2>/dev/null)
                then
                        # checking out selected paths from a tree-ish.
                        new="$rev"
@@ -128,14 +129,14 @@ Did you intend to checkout '$@' which can not be resolved as commit?"
                # from a specific tree-ish; note that this is for
                # rescuing paths and is never meant to remove what
                # is not in the named tree-ish.
-               git-ls-tree --full-name -r "$new" "$@" |
-               git-update-index --index-info || exit $?
+               git ls-tree --full-name -r "$new" "$@" |
+               git update-index --index-info || exit $?
        fi
 
        # Make sure the request is about existing paths.
-       git-ls-files --error-unmatch -- "$@" >/dev/null || exit
-       git-ls-files -- "$@" |
-       git-checkout-index -f -u --stdin
+       git ls-files --error-unmatch -- "$@" >/dev/null || exit
+       git ls-files -- "$@" |
+       git checkout-index -f -u --stdin
        exit $?
 else
        # Make sure we did not fall back on $arg^{tree} codepath
@@ -143,7 +144,7 @@ else
        # but switching branches.
        if test '' != "$new"
        then
-               git-rev-parse --verify "$new^{commit}" >/dev/null 2>&1 ||
+               git rev-parse --verify "$new^{commit}" >/dev/null 2>&1 ||
                die "Cannot switch branch to a non-commit."
        fi
 fi
@@ -199,10 +200,10 @@ fi
 
 if [ "$force" ]
 then
-    git-read-tree $v --reset -u $new
+    git read-tree $v --reset -u $new
 else
-    git-update-index --refresh >/dev/null
-    merge_error=$(git-read-tree -m -u --exclude-per-directory=.gitignore $old $new 2>&1) || (
+    git update-index --refresh >/dev/null
+    merge_error=$(git read-tree -m -u --exclude-per-directory=.gitignore $old $new 2>&1) || (
        case "$merge" in
        '')
                echo >&2 "$merge_error"
@@ -210,7 +211,7 @@ else
        esac
 
        # Match the index to the working tree, and do a three-way.
-       git diff-files --name-only | git update-index --remove --stdin &&
+       git diff-files --name-only | git update-index --remove --stdin &&
        work=`git write-tree` &&
        git read-tree $v --reset -u $new || exit
 
@@ -245,7 +246,7 @@ else
     (exit $saved_err)
 fi
 
-# 
+#
 # Switch the HEAD pointer to the new branch if we
 # checked out a branch head, and remove any potential
 # old MERGE_HEAD's (subsequent commits will clearly not
@@ -253,12 +254,13 @@ fi
 #
 if [ "$?" -eq 0 ]; then
        if [ "$newbranch" ]; then
-               git-branch $track $newbranch_log "$newbranch" "$new_name" || exit
+               git branch $track $newbranch_log "$newbranch" "$new_name" || exit
                branch="$newbranch"
        fi
        if test -n "$branch"
        then
-               GIT_DIR="$GIT_DIR" git-symbolic-ref -m "checkout: moving to $branch" HEAD "refs/heads/$branch"
+               old_branch_name=`expr "z$oldbranch" : 'zrefs/heads/\(.*\)'`
+               GIT_DIR="$GIT_DIR" git symbolic-ref -m "checkout: moving from $old_branch_name to $branch" HEAD "refs/heads/$branch"
                if test -n "$quiet"
                then
                        true    # nothing
@@ -270,7 +272,7 @@ if [ "$?" -eq 0 ]; then
                fi
        elif test -n "$detached"
        then
-               git-update-ref --no-deref -m "checkout: moving to $arg" HEAD "$detached" ||
+               git update-ref --no-deref -m "checkout: moving to $arg" HEAD "$detached" ||
                        die "Cannot detach HEAD"
                if test -n "$detach_warn"
                then