Merge branch 'zj/term-columns' into maint

* zj/term-columns:
  pager: find out the terminal width before spawning the pager

diff --combined cache.h
index 9bd8c2d06c80c958b5f654fe16e7294883e49a30,c7e3b4d49e64ef05b4f094f46fec06ded5704907..c07f54e9cfdf3ed124ed1ff7b029e9dd6789b28c
--- 1/cache.h
--- 2/cache.h
+++ b/cache.h
@@@ -35,7 -35,6 +35,7 @@@ int git_inflate(git_zstream *, int flus
  void git_deflate_init(git_zstream *, int level);
  void git_deflate_init_gzip(git_zstream *, int level);
  void git_deflate_end(git_zstream *);
 +int git_deflate_abort(git_zstream *);
  int git_deflate_end_gently(git_zstream *);
  int git_deflate(git_zstream *, int flush);
  unsigned long git_deflate_bound(git_zstream *, unsigned long);
@@@ -307,7 -306,7 +307,7 @@@ static inline unsigned int canon_mode(u
  }
  
  #define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7)
 -#define cache_entry_size(len) flexible_size(cache_entry,len)
 +#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1)
  #define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len)
  #define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len)
  
@@@ -317,6 -316,7 +317,6 @@@ struct index_state 
        struct string_list *resolve_undo;
        struct cache_tree *cache_tree;
        struct cache_time timestamp;
 -      void *alloc;
        unsigned name_hash_initialized : 1,
                 initialized : 1;
        struct hash_table name_hash;
@@@ -598,7 -598,6 +598,7 @@@ extern size_t packed_git_window_size
  extern size_t packed_git_limit;
  extern size_t delta_base_cache_limit;
  extern unsigned long big_file_threshold;
 +extern unsigned long pack_size_limit_cfg;
  extern int read_replace_refs;
  extern int fsync_object_files;
  extern int core_preload_index;
@@@ -833,9 -832,7 +833,9 @@@ static inline int get_sha1_with_context
  extern int get_sha1_hex(const char *hex, unsigned char *sha1);
  
  extern char *sha1_to_hex(const unsigned char *sha1);  /* static buffer result! */
 -extern int read_ref(const char *filename, unsigned char *sha1);
 +extern int read_ref_full(const char *refname, unsigned char *sha1,
 +                       int reading, int *flags);
 +extern int read_ref(const char *refname, unsigned char *sha1);
  
  /*
   * Resolve a reference, recursively following symbolic refererences.
@@@ -867,8 -864,7 +867,8 @@@
   *
   * errno is sometimes set on errors, but not always.
   */
 -extern const char *resolve_ref(const char *ref, unsigned char *sha1, int reading, int *flag);
 +extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag);
 +extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag);
  
  extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref);
  extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref);
@@@ -877,7 -873,7 +877,7 @@@ extern int get_sha1_mb(const char *str
  
  extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules);
  extern const char *ref_rev_parse_rules[];
 -extern const char *ref_fetch_rules[];
 +#define ref_fetch_rules ref_rev_parse_rules
  
  extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg);
  extern int validate_headref(const char *ref);
@@@ -1028,6 -1024,7 +1028,6 @@@ struct ref 
  extern struct ref *find_ref_by_name(const struct ref *list, const char *name);
  
  #define CONNECT_VERBOSE       (1u << 0)
 -extern char *git_getpass(const char *prompt);
  extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags);
  extern int finish_connect(struct child_process *conn);
  extern int git_connection_is_socket(struct child_process *conn);
@@@ -1037,7 -1034,6 +1037,7 @@@ struct extra_have_objects 
  };
  extern struct ref **get_remote_heads(int in, struct ref **list, unsigned int flags, struct extra_have_objects *);
  extern int server_supports(const char *feature);
 +extern const char *parse_feature_request(const char *features, const char *feature);
  
  extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path);
  
@@@ -1176,6 -1172,7 +1176,7 @@@ extern void setup_pager(void)
  extern const char *pager_program;
  extern int pager_in_use(void);
  extern int pager_use_color;
+ extern int term_columns(void);
  
  extern const char *editor_program;
  extern const char *askpass_program;