add -p: improve error messages

diff --git a/cache.h b/cache.h
index d3e240228c9c488f78ee9be06c9d151f1d2325b2..d8b975a5715e8a5ec7c32e176958725cba61d67a 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -644,6 +644,15 @@ extern int write_locked_index(struct index_state *, struct lock_file *lock, unsi
 extern int discard_index(struct index_state *);
 extern void move_index_extensions(struct index_state *dst, struct index_state *src);
 extern int unmerged_index(const struct index_state *);
+
+/**
+ * Returns 1 if the index differs from HEAD, 0 otherwise. When on an unborn
+ * branch, returns 1 if there are entries in the index, 0 otherwise. If an
+ * strbuf is provided, the space-separated list of files that differ will be
+ * appended to it.
+ */
+extern int index_has_changes(struct strbuf *sb);
+
 extern int verify_path(const char *path);
 extern int strcmp_offset(const char *s1, const char *s2, size_t *first_change);
 extern int index_dir_exists(struct index_state *istate, const char *name, int namelen);
@@ -1491,6 +1500,7 @@ extern const char *ident_default_name(void);
 extern const char *ident_default_email(void);
 extern const char *git_editor(void);
 extern const char *git_pager(int stdout_is_tty);
+extern int is_terminal_dumb(void);
 extern int git_ident_config(const char *, const char *, void *);
 extern void reset_ident_date(void);
 
@@ -1972,4 +1982,10 @@ void sleep_millisec(int millisec);
  */
 void safe_create_dir(const char *dir, int share);
 
+/*
+ * Should we print an ellipsis after an abbreviated SHA-1 value
+ * when doing diff-raw output or indicating a detached HEAD?
+ */
+extern int print_sha1_ellipsis(void);
+
 #endif /* CACHE_H */