Merge branch 'jn/paginate-fix'

* jn/paginate-fix:
t7006 (pager): add missing TTY prerequisites
merge-file: run setup_git_directory_gently() sooner
var: run setup_git_directory_gently() sooner
ls-remote: run setup_git_directory_gently() sooner
index-pack: run setup_git_directory_gently() sooner
config: run setup_git_directory_gently() sooner
bundle: run setup_git_directory_gently() sooner
apply: run setup_git_directory_gently() sooner
grep: run setup_git_directory_gently() sooner
shortlog: run setup_git_directory_gently() sooner
git wrapper: allow setup_git_directory_gently() be called earlier
setup: remember whether repository was found
git wrapper: introduce startup_info struct

Conflicts:
builtin/index-pack.c

diff --cc builtin/apply.c
Simple merge

diff --cc builtin/config.c
Simple merge

diff --cc builtin/grep.c
index b725ede0f7270637759b9fef52ab5450fc1712e2,ca56c5b0099e19059b51440880d032c5e1d27f5e..da32f3df34da7af3cdcb0a9dd6aa66061bdfe927
--- 1/builtin/grep.c
--- 2/builtin/grep.c
+++ b/builtin/grep.c
@@@ -834,12 -834,12 +834,12 @@@ int cmd_grep(int argc, const char **arg
        int external_grep_allowed__ignored;
        const char *show_in_pager = NULL, *default_pager = "dummy";
        struct grep_opt opt;
 -      struct object_array list = { 0, 0, NULL };
 +      struct object_array list = OBJECT_ARRAY_INIT;
        const char **paths = NULL;
 -      struct string_list path_list = { NULL, 0, 0, 0 };
 +      struct string_list path_list = STRING_LIST_INIT_NODUP;
        int i;
        int dummy;
-       int nongit = 0, use_index = 1;
+       int use_index = 1;
        struct option options[] = {
                OPT_BOOLEAN(0, "cached", &cached,
                        "search in index instead of in the work tree"),

diff --cc builtin/index-pack.c
index 96333d48cd49fcfba5707530440f6f6848a2acf5,e852890862e12c9ebeec087e6ada6fde59a75efc..2e680d7a7ac3495c9d6bd10e0fa6a6ae28bb8670
--- 1/builtin/index-pack.c
--- 2/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@@ -885,9 -884,6 +884,8 @@@ int cmd_index_pack(int argc, const cha
        if (argc == 2 && !strcmp(argv[1], "-h"))
                usage(index_pack_usage);
  
-       prefix = setup_git_directory_gently(&nongit);
 +      read_replace_refs = 0;
 +
        git_config(git_index_pack_config, NULL);
        if (prefix && chdir(prefix))
                die("Cannot come back to cwd");

diff --cc cache.h
index eb77e1df48814b92e76436ca3184319147192f7d,f9e82a8acea5a607e3c65e9d702de9117b42b520..733d4d1c81fe47bb2fa68aa3a76bade464de3051
--- 1/cache.h
--- 2/cache.h
+++ b/cache.h
@@@ -1099,9 -1096,13 +1099,15 @@@ void overlay_tree_on_cache(const char *
  
  char *alias_lookup(const char *alias);
  int split_cmdline(char *cmdline, const char ***argv);
 +/* Takes a negative value returned by split_cmdline */
 +const char *split_cmdline_strerror(int cmdline_errno);
  
+ /* git.c */
+ struct startup_info {
+       int have_repository;
+ };
+ extern struct startup_info *startup_info;
+ 
  /* builtin/merge.c */
  int checkout_fast_forward(const unsigned char *from, const unsigned char *to);
  

diff --cc git.c
index 12d2952e079103c87b1f176f6928de4f342de9b5,286a3595a82d33b5c3d754cf422015c867617b63..8de48107e0dced316704c1ad78569ccb9eeebb08
--- 1/git.c
--- 2/git.c
+++ b/git.c
@@@ -331,16 -336,16 +337,16 @@@ static void handle_internal_command(in
                { "fsck-objects", cmd_fsck, RUN_SETUP },
                { "gc", cmd_gc, RUN_SETUP },
                { "get-tar-commit-id", cmd_get_tar_commit_id },
-               { "grep", cmd_grep },
+               { "grep", cmd_grep, RUN_SETUP_GENTLY },
                { "hash-object", cmd_hash_object },
                { "help", cmd_help },
-               { "index-pack", cmd_index_pack },
+               { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY },
                { "init", cmd_init_db },
                { "init-db", cmd_init_db },
 -              { "log", cmd_log, RUN_SETUP | USE_PAGER },
 +              { "log", cmd_log, RUN_SETUP },
                { "ls-files", cmd_ls_files, RUN_SETUP },
                { "ls-tree", cmd_ls_tree, RUN_SETUP },
-               { "ls-remote", cmd_ls_remote },
+               { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
                { "mailinfo", cmd_mailinfo },
                { "mailsplit", cmd_mailsplit },
                { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE },
@@@ -379,9 -384,9 +385,9 @@@
                { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE },
                { "rm", cmd_rm, RUN_SETUP },
                { "send-pack", cmd_send_pack, RUN_SETUP },
-               { "shortlog", cmd_shortlog, USE_PAGER },
+               { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER },
                { "show-branch", cmd_show_branch, RUN_SETUP },
 -              { "show", cmd_show, RUN_SETUP | USE_PAGER },
 +              { "show", cmd_show, RUN_SETUP },
                { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
                { "stripspace", cmd_stripspace },
                { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
@@@ -393,10 -398,10 +399,10 @@@
                { "update-ref", cmd_update_ref, RUN_SETUP },
                { "update-server-info", cmd_update_server_info, RUN_SETUP },
                { "upload-archive", cmd_upload_archive },
-               { "var", cmd_var },
+               { "var", cmd_var, RUN_SETUP_GENTLY },
                { "verify-tag", cmd_verify_tag, RUN_SETUP },
                { "version", cmd_version },
 -              { "whatchanged", cmd_whatchanged, RUN_SETUP | USE_PAGER },
 +              { "whatchanged", cmd_whatchanged, RUN_SETUP },
                { "write-tree", cmd_write_tree, RUN_SETUP },
                { "verify-pack", cmd_verify_pack },
                { "show-ref", cmd_show_ref, RUN_SETUP },

diff --cc setup.c
index d19aa7d7a9633eaf8bb7d65d31bad6b67bf85ead,6ee1e28bd8650332aade03b78a2660abbde5478a..a3b76de2bb1c18e2f3b8cdf5799c3c650b16d027
--- 1/setup.c
--- 2/setup.c
+++ b/setup.c
@@@ -505,8 -482,34 +505,18 @@@ static const char *setup_git_directory_
                        die_errno("Cannot change to '%s/..'", cwd);
                }
        }
 -
 -      inside_git_dir = 0;
 -      if (!work_tree_env)
 -              inside_work_tree = 1;
 -      root_len = offset_1st_component(cwd);
 -      git_work_tree_cfg = xstrndup(cwd, offset > root_len ? offset : root_len);
 -      if (check_repository_format_gently(nongit_ok))
 -              return NULL;
 -      if (offset == len)
 -              return NULL;
 -
 -      /* Make "offset" point to past the '/', and add a '/' at the end */
 -      offset++;
 -      cwd[len++] = '/';
 -      cwd[len] = 0;
 -      return cwd + offset;
  }
  
+ const char *setup_git_directory_gently(int *nongit_ok)
+ {
+       const char *prefix;
+ 
+       prefix = setup_git_directory_gently_1(nongit_ok);
+       if (startup_info)
+               startup_info->have_repository = !nongit_ok || !*nongit_ok;
+       return prefix;
+ }
+ 
  int git_config_perm(const char *var, const char *value)
  {
        int i;