docs/diff-options: clarify scope of diff-filter types

diff --git a/config.c b/config.c
index b8cce1dffa2e4284c8e4946ea77a7a34b18f8efa..0e9e1ebefc0a6771de7bf20615e41176ed986179 100644 (file)
--- a/config.c
+++ b/config.c
@@ -66,6 +66,8 @@ static struct key_value_info *current_config_kvi;
  */
 static enum config_scope current_parsing_scope;
 
+static int core_compression_seen;
+static int pack_compression_seen;
 static int zlib_compression_seen;
 
 /*
@@ -295,7 +297,9 @@ int git_config_parse_parameter(const char *text,
                               config_fn_t fn, void *data)
 {
        const char *value;
+       char *canonical_name;
        struct strbuf **pair;
+       int ret;
 
        pair = strbuf_split_str(text, '=', 2);
        if (!pair[0])
@@ -313,13 +317,15 @@ int git_config_parse_parameter(const char *text,
                strbuf_list_free(pair);
                return error("bogus config parameter: %s", text);
        }
-       strbuf_tolower(pair[0]);
-       if (fn(pair[0]->buf, value, data) < 0) {
-               strbuf_list_free(pair);
-               return -1;
+
+       if (git_config_parse_key(pair[0]->buf, &canonical_name, NULL)) {
+               ret = -1;
+       } else {
+               ret = (fn(canonical_name, value, data) < 0) ? -1 : 0;
+               free(canonical_name);
        }
        strbuf_list_free(pair);
-       return 0;
+       return ret;
 }
 
 int git_config_from_parameters(config_fn_t fn, void *data)
@@ -911,7 +917,12 @@ static int git_default_core_config(const char *var, const char *value)
        }
 
        if (!strcmp(var, "core.logallrefupdates")) {
-               log_all_ref_updates = git_config_bool(var, value);
+               if (value && !strcasecmp(value, "always"))
+                       log_all_ref_updates = LOG_REFS_ALWAYS;
+               else if (git_config_bool(var, value))
+                       log_all_ref_updates = LOG_REFS_NORMAL;
+               else
+                       log_all_ref_updates = LOG_REFS_NONE;
                return 0;
        }
 
@@ -921,13 +932,22 @@ static int git_default_core_config(const char *var, const char *value)
        }
 
        if (!strcmp(var, "core.abbrev")) {
-               int abbrev = git_config_int(var, value);
-               if (abbrev < minimum_abbrev || abbrev > 40)
-                       return -1;
-               default_abbrev = abbrev;
+               if (!value)
+                       return config_error_nonbool(var);
+               if (!strcasecmp(value, "auto"))
+                       default_abbrev = -1;
+               else {
+                       int abbrev = git_config_int(var, value);
+                       if (abbrev < minimum_abbrev || abbrev > 40)
+                               return error("abbrev length out of range: %d", abbrev);
+                       default_abbrev = abbrev;
+               }
                return 0;
        }
 
+       if (!strcmp(var, "core.disambiguate"))
+               return set_disambiguate_hint_config(var, value);
+
        if (!strcmp(var, "core.loosecompression")) {
                int level = git_config_int(var, value);
                if (level == -1)
@@ -949,6 +969,8 @@ static int git_default_core_config(const char *var, const char *value)
                core_compression_seen = 1;
                if (!zlib_compression_seen)
                        zlib_compression_level = level;
+               if (!pack_compression_seen)
+                       pack_compression_level = level;
                return 0;
        }
 
@@ -1014,9 +1036,6 @@ static int git_default_core_config(const char *var, const char *value)
                return 0;
        }
 
-       if (!strcmp(var, "core.pager"))
-               return git_config_string(&pager_program, var, value);
-
        if (!strcmp(var, "core.editor"))
                return git_config_string(&editor_program, var, value);
 
@@ -1212,6 +1231,18 @@ int git_default_config(const char *var, const char *value, void *dummy)
                pack_size_limit_cfg = git_config_ulong(var, value);
                return 0;
        }
+
+       if (!strcmp(var, "pack.compression")) {
+               int level = git_config_int(var, value);
+               if (level == -1)
+                       level = Z_DEFAULT_COMPRESSION;
+               else if (level < 0 || level > Z_BEST_COMPRESSION)
+                       die(_("bad pack compression level %d"), level);
+               pack_compression_level = level;
+               pack_compression_seen = 1;
+               return 0;
+       }
+
        /* Add other config variables here and to Documentation/config.txt. */
        return 0;
 }
@@ -1301,10 +1332,10 @@ int git_config_from_mem(config_fn_t fn, const enum config_origin_type origin_typ
        return do_config_from(&top, fn, data);
 }
 
-static int git_config_from_blob_sha1(config_fn_t fn,
-                                    const char *name,
-                                    const unsigned char *sha1,
-                                    void *data)
+int git_config_from_blob_sha1(config_fn_t fn,
+                             const char *name,
+                             const unsigned char *sha1,
+                             void *data)
 {
        enum object_type type;
        char *buf;
@@ -1376,7 +1407,7 @@ static int do_git_config_sequence(config_fn_t fn, void *data)
        int ret = 0;
        char *xdg_config = xdg_config_home("config");
        char *user_config = expand_user_path("~/.gitconfig");
-       char *repo_config = git_pathdup("config");
+       char *repo_config = have_git_dir() ? git_pathdup("config") : NULL;
 
        current_parsing_scope = CONFIG_SCOPE_SYSTEM;
        if (git_config_system() && !access_or_die(git_etc_gitconfig(), R_OK, 0))
@@ -2194,7 +2225,12 @@ int git_config_set_multivar_in_file_gently(const char *config_filename,
                        goto out_free;
                }
 
-               fstat(in_fd, &st);
+               if (fstat(in_fd, &st) == -1) {
+                       error_errno(_("fstat on %s failed"), config_filename);
+                       ret = CONFIG_INVALID_FILE;
+                       goto out_free;
+               }
+
                contents_sz = xsize_t(st.st_size);
                contents = xmmap_gently(NULL, contents_sz, PROT_READ,
                                        MAP_PRIVATE, in_fd, 0);
@@ -2396,7 +2432,7 @@ int git_config_rename_section_in_file(const char *config_filename,
 
        if (new_name && !section_name_is_ok(new_name)) {
                ret = error("invalid section name: %s", new_name);
-               goto out;
+               goto out_no_rollback;
        }
 
        if (!config_filename)
@@ -2411,10 +2447,13 @@ int git_config_rename_section_in_file(const char *config_filename,
 
        if (!(config_file = fopen(config_filename, "rb"))) {
                /* no config file means nothing to rename, no error */
-               goto unlock_and_out;
+               goto commit_and_out;
        }
 
-       fstat(fileno(config_file), &st);
+       if (fstat(fileno(config_file), &st) == -1) {
+               ret = error_errno(_("fstat on %s failed"), config_filename);
+               goto out;
+       }
 
        if (chmod(get_lock_file_path(lock), st.st_mode & 07777) < 0) {
                ret = error_errno("chmod on %s failed",
@@ -2470,11 +2509,13 @@ int git_config_rename_section_in_file(const char *config_filename,
                }
        }
        fclose(config_file);
-unlock_and_out:
+commit_and_out:
        if (commit_lock_file(lock) < 0)
                ret = error_errno("could not write config file %s",
                                  config_filename);
 out:
+       rollback_lock_file(lock);
+out_no_rollback:
        free(filename_buf);
        return ret;
 }
@@ -2499,11 +2540,10 @@ int parse_config_key(const char *var,
                     const char **subsection, int *subsection_len,
                     const char **key)
 {
-       int section_len = strlen(section);
        const char *dot;
 
        /* Does it start with "section." ? */
-       if (!starts_with(var, section) || var[section_len] != '.')
+       if (!skip_prefix(var, section, &var) || *var != '.')
                return -1;
 
        /*
@@ -2515,12 +2555,16 @@ int parse_config_key(const char *var,
        *key = dot + 1;
 
        /* Did we have a subsection at all? */
-       if (dot == var + section_len) {
-               *subsection = NULL;
-               *subsection_len = 0;
+       if (dot == var) {
+               if (subsection) {
+                       *subsection = NULL;
+                       *subsection_len = 0;
+               }
        }
        else {
-               *subsection = var + section_len + 1;
+               if (!subsection)
+                       return -1;
+               *subsection = var + 1;
                *subsection_len = dot - *subsection;
        }