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authorLibravatar Junio C Hamano <gitster@pobox.com>2016-09-30 17:19:35 -0700
committerLibravatar Junio C Hamano <gitster@pobox.com>2016-10-03 12:54:21 -0700
commit65acfeacaa6e50c92a6ac18dc08356026a99b3f3 (patch)
treea1eb64ce36df89ece856f034cf817a4c27b39efa
parentget_short_sha1: make default disambiguation configurable (diff)
downloadtgif-65acfeacaa6e50c92a6ac18dc08356026a99b3f3.tar.xz
abbrev: add FALLBACK_DEFAULT_ABBREV to prepare for auto sizing
We'll be introducing a new way to decide the default abbreviation length by initialising DEFAULT_ABBREV to -1 to signal the first call to "find unique abbreviation" codepath to compute a reasonable value based on the number of objects we have to avoid collisions. We have long relied on DEFAULT_ABBREV being a positive concrete value that is used as the abbreviation length when no extra configuration or command line option has overridden it. Some codepaths wants to use such a positive concrete default value even before making their first request to actually trigger the computation for the auto sized default. Introduce FALLBACK_DEFAULT_ABBREV and use it to the code that attempts to align the report from "git fetch". For now, this macro is also used to initialize the default_abbrev variable, but the auto-sizing code will use -1 and then use the value of FALLBACK_DEFAULT_ABBREV as the starting point of auto-sizing. Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--builtin/fetch.c3
-rw-r--r--cache.h3
-rw-r--r--environment.c2
-rw-r--r--transport.h3
4 files changed, 8 insertions, 3 deletions
diff --git a/builtin/fetch.c b/builtin/fetch.c
index 164623bb6f..a9f12cc5cf 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -17,6 +17,9 @@
#include "argv-array.h"
#include "utf8.h"
+#define TRANSPORT_SUMMARY(x) \
+ (int)(TRANSPORT_SUMMARY_WIDTH + strlen(x) - gettext_width(x)), (x)
+
static const char * const builtin_fetch_usage[] = {
N_("git fetch [<options>] [<repository> [<refspec>...]]"),
N_("git fetch [<options>] <group>"),
diff --git a/cache.h b/cache.h
index f346c01708..5a651b8435 100644
--- a/cache.h
+++ b/cache.h
@@ -1183,6 +1183,9 @@ static inline int hex2chr(const char *s)
#define MINIMUM_ABBREV minimum_abbrev
#define DEFAULT_ABBREV default_abbrev
+/* used when the code does not know or care what the default abbrev is */
+#define FALLBACK_DEFAULT_ABBREV 7
+
struct object_context {
unsigned char tree[20];
char path[PATH_MAX];
diff --git a/environment.c b/environment.c
index cd5aa57179..44fb107b8a 100644
--- a/environment.c
+++ b/environment.c
@@ -16,7 +16,7 @@ int trust_executable_bit = 1;
int trust_ctime = 1;
int check_stat = 1;
int has_symlinks = 1;
-int minimum_abbrev = 4, default_abbrev = 7;
+int minimum_abbrev = 4, default_abbrev = FALLBACK_DEFAULT_ABBREV;
int ignore_case;
int assume_unchanged;
int prefer_symlink_refs;
diff --git a/transport.h b/transport.h
index 6fe3485325..e783377e40 100644
--- a/transport.h
+++ b/transport.h
@@ -142,8 +142,7 @@ struct transport {
#define TRANSPORT_PUSH_ATOMIC 8192
#define TRANSPORT_PUSH_OPTIONS 16384
-#define TRANSPORT_SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
-#define TRANSPORT_SUMMARY(x) (int)(TRANSPORT_SUMMARY_WIDTH + strlen(x) - gettext_width(x)), (x)
+#define TRANSPORT_SUMMARY_WIDTH (2 * FALLBACK_DEFAULT_ABBREV + 3)
/* Returns a transport suitable for the url */
struct transport *transport_get(struct remote *, const char *);