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read-tree: further loosen "working file will be lost" check.

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This follows up commit ed93b449 where we removed overcautious
"working file will be lost" check.

A new option "--exclude-per-directory=.gitignore" can be used to
tell the "git-read-tree" command that the user does not mind
losing contents in untracked files in the working tree, if they
need to be overwritten by a merge (either a two-way "switch
branches" merge, or a three-way merge).

Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano
2006-12-04 16:00:46 -08:00
parent 8ebe185bbf
commit f8a9d42872
6 changed files with 119 additions and 15 deletions
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20
builtin-read-tree.c
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@ -10,6 +10,7 @@
#include "tree-walk.h"
#include "cache-tree.h"
#include "unpack-trees.h"
#include "dir.h"
#include "builtin.h"
static struct object_list *trees;
@ -178,6 +179,23 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
continue;
}
if (!strncmp(arg, "--exclude-per-directory=", 24)) {
struct dir_struct *dir;
if (opts.dir)
die("more than one --exclude-per-directory are given.");
dir = calloc(1, sizeof(*opts.dir));
dir->show_ignored = 1;
dir->exclude_per_dir = arg + 24;
opts.dir = dir;
/* We do not need to nor want to do read-directory
* here; we are merely interested in reusing the
* per directory ignore stack mechanism.
*/
continue;
}
/* using -u and -i at the same time makes no sense */
if (1 < opts.index_only + opts.update)
usage(read_tree_usage);
@ -190,6 +208,8 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
}
if ((opts.update||opts.index_only) && !opts.merge)
usage(read_tree_usage);
if ((opts.dir && !opts.update))
die("--exclude-per-directory is meaningless unless -u");
if (opts.prefix) {
int pfxlen = strlen(opts.prefix);