Merge remote-tracking branch 'ko/maint' into jc/diff-index-quick-exit-early

* ko/maint: (4352 commits)
  git-submodule.sh: separate parens by a space to avoid confusing some shells
  Documentation/technical/api-diff.txt: correct name of diff_unmerge()
  read_gitfile_gently: use ssize_t to hold read result
  remove tests of always-false condition
  rerere.c: diagnose a corrupt MERGE_RR when hitting EOF between TAB and '\0'
  Git 1.7.5.3
  init/clone: remove short option -L and document --separate-git-dir
  do not read beyond end of malloc'd buffer
  git-svn: Fix git svn log --show-commit
  Git 1.7.5.2
  provide a copy of the LGPLv2.1
  test core.gitproxy configuration
  copy_gecos: fix not adding nlen to len when processing "&"
  Update draft release notes to 1.7.5.2
  Documentation/git-fsck.txt: fix typo: unreadable -> unreachable
  send-pack: avoid deadlock on git:// push with failed pack-objects
  connect: let callers know if connection is a socket
  connect: treat generic proxy processes like ssh processes
  sideband_demux(): fix decl-after-stmt
  t3503: test cherry picking and reverting root commits
  ...

Conflicts:
	diff.c

diff --cc diff-lib.c
index 869d8f0e77832385c6047dce48e28dcc91171fb3,3b5f2242a597ff1b44a3af6be72cb14e6e0d5455..9c29293bbc05d175ba13338813e8532c7ad677cf
--- 1/diff-lib.c
--- 2/diff-lib.c
+++ b/diff-lib.c
@@@ -72,11 -100,14 +100,12 @@@ int run_diff_files(struct rev_info *rev
                unsigned int oldmode, newmode;
                struct cache_entry *ce = active_cache[i];
                int changed;
+               unsigned dirty_submodule = 0;
  
 -              if (DIFF_OPT_TST(&revs->diffopt, QUICK) &&
 -                  !revs->diffopt.filter &&
 -                  DIFF_OPT_TST(&revs->diffopt, HAS_CHANGES))
 +              if (diff_can_quit_early(&revs->diffopt))
                        break;
  
-               if (!ce_path_match(ce, revs->prune_data))
+               if (!ce_path_match(ce, &revs->prune_data))
                        continue;
  
                if (ce_stage(ce)) {

diff --cc diff.c
index ae6853fcf1ea1e10c1d8f6750f69b71a7a5e73b4,9a8012e362fe2bc08d4ecce21e68972579c3693b..7d1cdea310b95a93e63ab834475951d8c082c6c2
--- 1/diff.c
--- 2/diff.c
+++ b/diff.c
@@@ -3513,13 -4288,24 +4288,31 @@@ int diff_result_code(struct diff_option
        return result;
  }
  
 +int diff_can_quit_early(struct diff_options *opt)
 +{
 +      return (DIFF_OPT_TST(opt, QUICK) &&
 +              !opt->filter &&
 +              DIFF_OPT_TST(opt, HAS_CHANGES));
 +}
 +
+ /*
+  * Shall changes to this submodule be ignored?
+  *
+  * Submodule changes can be configured to be ignored separately for each path,
+  * but that configuration can be overridden from the command line.
+  */
+ static int is_submodule_ignored(const char *path, struct diff_options *options)
+ {
+       int ignored = 0;
+       unsigned orig_flags = options->flags;
+       if (!DIFF_OPT_TST(options, OVERRIDE_SUBMODULE_CONFIG))
+               set_diffopt_flags_from_submodule_config(options, path);
+       if (DIFF_OPT_TST(options, IGNORE_SUBMODULES))
+               ignored = 1;
+       options->flags = orig_flags;
+       return ignored;
+ }
+ 
  void diff_addremove(struct diff_options *options,
                    int addremove, unsigned mode,
                    const unsigned char *sha1,

diff --cc diff.h
Simple merge

diff --cc t/t4040-whitespace-status.sh
Simple merge

diff --cc tree-diff.c
index 33881d1ad0b7381db4bd39c97e160d93f62a1cdb,76f83fcc27e50b12ddbc8f72badd8d29f5b4230d..072c441601d2268c3036518d7704b1122271600e
--- 1/tree-diff.c
--- 2/tree-diff.c
+++ b/tree-diff.c
@@@ -281,16 -137,30 +137,29 @@@ static void skip_uninteresting(struct t
        }
  }
  
- int diff_tree(struct tree_desc *t1, struct tree_desc *t2, const char *base, struct diff_options *opt)
+ int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
+             const char *base_str, struct diff_options *opt)
  {
-       int baselen = strlen(base);
+       struct strbuf base;
+       int baselen = strlen(base_str);
+       int all_t1_interesting = 0;
+       int all_t2_interesting = 0;
+ 
+       /* Enable recursion indefinitely */
+       opt->pathspec.recursive = DIFF_OPT_TST(opt, RECURSIVE);
+       opt->pathspec.max_depth = -1;
+ 
+       strbuf_init(&base, PATH_MAX);
+       strbuf_add(&base, base_str, baselen);
  
        for (;;) {
 -              if (DIFF_OPT_TST(opt, QUICK) &&
 -                  DIFF_OPT_TST(opt, HAS_CHANGES))
 +              if (diff_can_quit_early(opt))
                        break;
-               if (opt->nr_paths) {
-                       skip_uninteresting(t1, base, baselen, opt);
-                       skip_uninteresting(t2, base, baselen, opt);
+               if (opt->pathspec.nr) {
+                       if (!all_t1_interesting)
+                               skip_uninteresting(t1, &base, opt, &all_t1_interesting);
+                       if (!all_t2_interesting)
+                               skip_uninteresting(t2, &base, opt, &all_t2_interesting);
                }
                if (!t1->size) {
                        if (!t2->size)