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core.excludesfile clean-up

There are inconsistencies in the way commands currently handle
the core.excludesfile configuration variable.  The problem is
the variable is too new to be noticed by anything other than
git-add and git-status.

 * git-ls-files does not notice any of the "ignore" files by
   default, as it predates the standardized set of ignore files.
   The calling scripts established the convention to use
   .git/info/exclude, .gitignore, and later core.excludesfile.

 * git-add and git-status know about it because they call
   add_excludes_from_file() directly with their own notion of
   which standard set of ignore files to use.  This is just a
   stupid duplication of code that need to be updated every time
   the definition of the standard set of ignore files is
   changed.

 * git-read-tree takes --exclude-per-directory=<gitignore>,
   not because the flexibility was needed.  Again, this was
   because the option predates the standardization of the ignore
   files.

 * git-merge-recursive uses hardcoded per-directory .gitignore
   and nothing else.  git-clean (scripted version) does not
   honor core.* because its call to underlying ls-files does not
   know about it.  git-clean in C (parked in 'pu') doesn't either.

We probably could change git-ls-files to use the standard set
when no excludes are specified on the command line and ignore
processing was asked, or something like that, but that will be a
change in semantics and might break people's scripts in a subtle
way.  I am somewhat reluctant to make such a change.

On the other hand, I think it makes perfect sense to fix
git-read-tree, git-merge-recursive and git-clean to follow the
same rule as other commands.  I do not think of a valid use case
to give an exclude-per-directory that is nonstandard to
read-tree command, outside a "negative" test in the t1004 test
script.

This patch is the first step to untangle this mess.

The next step would be to teach read-tree, merge-recursive and
clean (in C) to use setup_standard_excludes().

Signed-off-by: Junio C Hamano <gitster@pobox.com>
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1 parent f5f6cb8 commit 039bc64e886716593d59910694a6c8ed5b72c515 @gitster gitster committed Nov 14, 2007
Showing with 25 additions and 34 deletions.
  1. +2 −20 builtin-add.c
  2. +1 −0 cache.h
  3. +7 −0 config.c
  4. +12 −0 dir.c
  5. +1 −0 dir.h
  6. +1 −0 environment.c
  7. +1 −14 wt-status.c
View
22 builtin-add.c
@@ -21,7 +21,6 @@ static const char * const builtin_add_usage[] = {
};
static int take_worktree_changes;
-static const char *excludes_file;
static void prune_directory(struct dir_struct *dir, const char **pathspec, int prefix)
{
@@ -61,12 +60,7 @@ static void fill_directory(struct dir_struct *dir, const char **pathspec,
memset(dir, 0, sizeof(*dir));
if (!ignored_too) {
dir->collect_ignored = 1;
- dir->exclude_per_dir = ".gitignore";
- path = git_path("info/exclude");
- if (!access(path, R_OK))
- add_excludes_from_file(dir, path);
- if (excludes_file != NULL && !access(excludes_file, R_OK))
- add_excludes_from_file(dir, excludes_file);
+ setup_standard_excludes(dir);
}
/*
@@ -141,18 +135,6 @@ static void refresh(int verbose, const char **pathspec)
free(seen);
}
-static int git_add_config(const char *var, const char *value)
-{
- if (!strcmp(var, "core.excludesfile")) {
- if (!value)
- die("core.excludesfile without value");
- excludes_file = xstrdup(value);
- return 0;
- }
-
- return git_default_config(var, value);
-}
-
int interactive_add(void)
{
const char *argv[2] = { "add--interactive", NULL };
@@ -193,7 +175,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
exit(interactive_add());
}
- git_config(git_add_config);
+ git_config(git_default_config);
newfd = hold_locked_index(&lock_file, 1);
View
1 cache.h
@@ -581,6 +581,7 @@ extern int pager_in_use;
extern int pager_use_color;
extern char *editor_program;
+extern char *excludes_file;
/* base85 */
int decode_85(char *dst, const char *line, int linelen);
View
7 config.c
@@ -431,6 +431,13 @@ int git_default_config(const char *var, const char *value)
return 0;
}
+ if (!strcmp(var, "core.excludesfile")) {
+ if (!value)
+ die("core.excludesfile without value");
+ excludes_file = xstrdup(value);
+ return 0;
+ }
+
/* Add other config variables here and to Documentation/config.txt. */
return 0;
}
View
12 dir.c
@@ -778,3 +778,15 @@ int remove_dir_recursively(struct strbuf *path, int only_empty)
ret = rmdir(path->buf);
return ret;
}
+
+void setup_standard_excludes(struct dir_struct *dir)
+{
+ const char *path;
+
+ dir->exclude_per_dir = ".gitignore";
+ path = git_path("info/exclude");
+ if (!access(path, R_OK))
+ add_excludes_from_file(dir, path);
+ if (excludes_file && !access(excludes_file, R_OK))
+ add_excludes_from_file(dir, excludes_file);
+}
View
1 dir.h
@@ -71,6 +71,7 @@ extern struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathna
extern char *get_relative_cwd(char *buffer, int size, const char *dir);
extern int is_inside_dir(const char *dir);
+extern void setup_standard_excludes(struct dir_struct *dir);
extern int remove_dir_recursively(struct strbuf *path, int only_empty);
#endif
View
1 environment.c
@@ -34,6 +34,7 @@ char *pager_program;
int pager_in_use;
int pager_use_color = 1;
char *editor_program;
+char *excludes_file;
int auto_crlf = 0; /* 1: both ways, -1: only when adding git objects */
/* This is set by setup_git_dir_gently() and/or git_default_config() */
View
15 wt-status.c
@@ -22,7 +22,6 @@ static const char use_add_rm_msg[] =
"use \"git add/rm <file>...\" to update what will be committed";
static const char use_add_to_include_msg[] =
"use \"git add <file>...\" to include in what will be committed";
-static const char *excludes_file;
static int parse_status_slot(const char *var, int offset)
{
@@ -251,22 +250,16 @@ static void wt_status_print_changed(struct wt_status *s)
static void wt_status_print_untracked(struct wt_status *s)
{
struct dir_struct dir;
- const char *x;
int i;
int shown_header = 0;
memset(&dir, 0, sizeof(dir));
- dir.exclude_per_dir = ".gitignore";
if (!s->untracked) {
dir.show_other_directories = 1;
dir.hide_empty_directories = 1;
}
- x = git_path("info/exclude");
- if (file_exists(x))
- add_excludes_from_file(&dir, x);
- if (excludes_file && file_exists(excludes_file))
- add_excludes_from_file(&dir, excludes_file);
+ setup_standard_excludes(&dir);
read_directory(&dir, ".", "", 0, NULL);
for(i = 0; i < dir.nr; i++) {
@@ -364,11 +357,5 @@ int git_status_config(const char *k, const char *v)
int slot = parse_status_slot(k, 13);
color_parse(v, k, wt_status_colors[slot]);
}
- if (!strcmp(k, "core.excludesfile")) {
- if (!v)
- die("core.excludesfile without value");
- excludes_file = xstrdup(v);
- return 0;
- }
return git_default_config(k, v);
}

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