Retire git-export.

git-export was done as a concept example on how easy it is to export
the git data to something else. It's much less powerful than any
number of trivial one-liner scripts now, and real exporters would not
ever use git-export.

It's obviously much less powerful than "git-whatchanged", or just
about any combination of git-rev-list + git-diff-tree.
Signed-off-by: NJunio C Hamano <junkio@cox.net>

.gitignore

@@ -24,7 +24,6 @@ git-diff-helper
 git-diff-index
 git-diff-stages
 git-diff-tree
-git-export
 git-fetch
 git-fetch-pack
 git-format-patch

Documentation/git-export.txt

-git-export(1)
-=============
-v0.1, May 2005
-
-NAME
-----
-git-export - Exports each commit and a diff against each of its parents
-
-
-SYNOPSIS
---------
-'git-export' top [base]
-
-DESCRIPTION
------------
-Exports each commit and diff against each of its parents, between
-top and base.  If base is not specified it exports everything.
-
-
-Author
-------
-Written by Linus Torvalds <torvalds@osdl.org>
-
-Documentation
---------------
-Documentation by David Greaves, Junio C Hamano and the git-list <git@vger.kernel.org>.
-
-GIT
----
-Part of the gitlink:git[7] suite
-

Documentation/git.txt

@@ -118,9 +118,6 @@ gitlink:git-diff-stages[1]::
 gitlink:git-diff-tree[1]::
 	Compares the content and mode of blobs found via two tree objects
 
-gitlink:git-export[1]::
-	Exports each commit and a diff against each of its parents
-
 gitlink:git-fsck-objects[1]::
 	Verifies the connectivity and validity of the objects in the database
 	Previously this command was known as git-fsck-cache.

Makefile

@@ -103,7 +103,7 @@ PROGRAMS = \
 	git-checkout-index git-clone-pack git-commit-tree \
 	git-convert-objects git-diff-files \
 	git-diff-helper git-diff-index git-diff-stages \
-	git-diff-tree git-export git-fetch-pack git-fsck-objects \
+	git-diff-tree git-fetch-pack git-fsck-objects \
 	git-hash-object git-init-db \
 	git-local-fetch git-ls-files git-ls-tree git-merge-base \
 	git-merge-index git-mktag git-pack-objects git-patch-id \

export.c

-#include "cache.h"
-#include "commit.h"
-
-/*
- * Show one commit
- */
-static void show_commit(struct commit *commit)
-{
-	char cmdline[400];
-	char hex[100];
-
-	strcpy(hex, sha1_to_hex(commit->object.sha1));
-	printf("Id: %s\n", hex);
-	fflush(NULL);
-	sprintf(cmdline, "git-cat-file commit %s", hex);
-	system(cmdline);
-	if (commit->parents) {
-		char *against = sha1_to_hex(commit->parents->item->object.sha1);
-		printf("\n\n======== diff against %s ========\n", against);
-		fflush(NULL);
-		sprintf(cmdline, "git-diff-tree -p %s %s", against, hex);
-		system(cmdline);
-	}
-	printf("======== end ========\n\n");
-}
-
-/*
- * Show all unseen commits, depth-first
- */
-static void show_unseen(struct commit *top)
-{
-	struct commit_list *parents;
-
-	if (top->object.flags & 2)
-		return;
-	top->object.flags |= 2;
-	parents = top->parents;
-	while (parents) {
-		show_unseen(parents->item);
-		parents = parents->next;
-	}
-	show_commit(top);
-}
-
-static void export(struct commit *top, struct commit *base)
-{
-	mark_reachable(&top->object, 1);
-	if (base)
-		mark_reachable(&base->object, 2);
-	show_unseen(top);
-}
-
-static struct commit *get_commit(unsigned char *sha1)
-{
-	struct commit *commit = lookup_commit(sha1);
-	if (!commit->object.parsed) {
-		struct commit_list *parents;
-
-		if (parse_commit(commit) < 0)
-			die("unable to parse commit %s", sha1_to_hex(sha1));
-		parents = commit->parents;
-		while (parents) {
-			get_commit(parents->item->object.sha1);
-			parents = parents->next;
-		}
-	}
-	return commit;
-}
-
-int main(int argc, char **argv)
-{
-	unsigned char base_sha1[20];
-	unsigned char top_sha1[20];
-
-	if (argc < 2 || argc > 4 ||
-	    get_sha1(argv[1], top_sha1) ||
-	    (argc == 3 && get_sha1(argv[2], base_sha1)))
-		usage("git-export top [base]");
-	export(get_commit(top_sha1), argc==3 ? get_commit(base_sha1) : NULL);
-	return 0;
-}