diff-delta.c: Rationalize culling of hash buckets

diff --git a/git.c b/git.c
index 230e50611f5946c416882734af5b1b838c3ef50c..fd3d83cd4c49409214dcc3e54480b7650e1b8b18 100644 (file)
--- a/git.c
+++ b/git.c
@@ -4,7 +4,7 @@
 #include "quote.h"
 
 const char git_usage_string[] =
-       "git [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate] [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE] [--help] COMMAND [ARGS]";
+       "git [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate|--no-pager] [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE] [--help] COMMAND [ARGS]";
 
 static void prepend_to_path(const char *dir, int len)
 {
@@ -58,6 +58,10 @@ static int handle_options(const char*** argv, int* argc, int* envchanged)
                        }
                } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) {
                        setup_pager();
+               } else if (!strcmp(cmd, "--no-pager")) {
+                       setenv("GIT_PAGER", "cat", 1);
+                       if (envchanged)
+                               *envchanged = 1;
                } else if (!strcmp(cmd, "--git-dir")) {
                        if (*argc < 2) {
                                fprintf(stderr, "No directory given for --git-dir.\n" );
@@ -89,7 +93,8 @@ static int handle_options(const char*** argv, int* argc, int* envchanged)
                                *envchanged = 1;
                } else if (!strcmp(cmd, "--bare")) {
                        static char git_dir[PATH_MAX+1];
-                       setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 1);
+                       is_bare_repository_cfg = 1;
+                       setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0);
                        if (envchanged)
                                *envchanged = 1;
                } else {
@@ -272,9 +277,14 @@ static int run_command(struct cmd_struct *p, int argc, const char **argv)
                prefix = setup_git_directory();
        if (p->option & USE_PAGER)
                setup_pager();
-       if ((p->option & NEED_WORK_TREE) &&
-           (!is_inside_work_tree() || is_inside_git_dir()))
-               die("%s must be run in a work tree", p->cmd);
+       if (p->option & NEED_WORK_TREE) {
+               const char *work_tree = get_git_work_tree();
+               const char *git_dir = get_git_dir();
+               if (!is_absolute_path(git_dir))
+                       set_git_dir(make_absolute_path(git_dir));
+               if (!work_tree || chdir(work_tree))
+                       die("%s must be run in a work tree", p->cmd);
+       }
        trace_argv_printf(argv, argc, "trace: built-in: git");
 
        status = p->fn(argc, argv, prefix);
@@ -310,7 +320,8 @@ static void handle_internal_command(int argc, const char **argv)
                { "branch", cmd_branch, RUN_SETUP },
                { "bundle", cmd_bundle },
                { "cat-file", cmd_cat_file, RUN_SETUP },
-               { "checkout-index", cmd_checkout_index, RUN_SETUP },
+               { "checkout-index", cmd_checkout_index,
+                       RUN_SETUP | NEED_WORK_TREE},
                { "check-ref-format", cmd_check_ref_format },
                { "check-attr", cmd_check_attr, RUN_SETUP | NEED_WORK_TREE },
                { "cherry", cmd_cherry, RUN_SETUP },
@@ -319,7 +330,7 @@ static void handle_internal_command(int argc, const char **argv)
                { "config", cmd_config },
                { "count-objects", cmd_count_objects, RUN_SETUP },
                { "describe", cmd_describe, RUN_SETUP },
-               { "diff", cmd_diff, USE_PAGER },
+               { "diff", cmd_diff },
                { "diff-files", cmd_diff_files },
                { "diff-index", cmd_diff_index, RUN_SETUP },
                { "diff-tree", cmd_diff_tree, RUN_SETUP },
@@ -445,11 +456,11 @@ int main(int argc, const char **argv)
        cmd = argv[0];
 
        /*
-        * We search for git commands in the following order:
-        *  - git_exec_path()
-        *  - the path of the "git" command if we could find it
-        *    in $0
-        *  - the regular PATH.
+        * We execute external git command via execv_git_cmd(),
+        * which looks at "--exec-path" option, GIT_EXEC_PATH
+        * environment, and $(gitexecdir) in Makefile while built,
+        * in this order.  For scripted commands, we prepend
+        * the value of the exec_path variable to the PATH.
         */
        if (exec_path)
                prepend_to_path(exec_path, strlen(exec_path));