Jeff King <peff@xxxxxxxx> writes:
> ... Now that function _would_
> want to be updated as a result of the other conversation (it would need
> to do something sensible with "-1", like turning it into "7", or
> whatever else is deemed reasonable outside of a repository).
>
> Anyway. I just wonder if you want to give it a better name while you are
> at it.
I'd say the patch to introduce the new function that makes the old
name potentially confusing is a good one to do the rename. Until
then I do not think there is no need to rename the existing one ;-)
Related tangent about "like turning it into", I am thinking adding
something like this as a preparatory step to Linus's auto-sizing
serires. That way, we do not have to spell "7"
Having to spell FALLBACK_DEFAULT_ABBREV over and over again would be
more irritating than having to spell "7" often, but I think it would
be a sign of a deeper problem if it turns out we have to repeat this
constant in many places, so an irritatingly long name may serve as a
canary in the coalmine ;-)
-- >8 --
Subject: 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@xxxxxxxxx>
---
builtin/fetch.c | 3 +++
cache.h | 3 +++
environment.c | 2 +-
transport.h | 3 +--
4 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/builtin/fetch.c b/builtin/fetch.c
index e4639d8eb1..5d6994d8e7 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -16,6 +16,9 @@
#include "connected.h"
#include "argv-array.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 4ff196c259..677554c59f 100644
--- a/cache.h
+++ b/cache.h
@@ -1133,6 +1133,9 @@ static inline unsigned int hexval(unsigned char c)
#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 96160a75a5..c8860f722d 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 c68140892c..ea25e42317 100644
--- a/transport.h
+++ b/transport.h
@@ -135,8 +135,7 @@ struct transport {
#define TRANSPORT_PUSH_CERT_IF_ASKED 4096
#define TRANSPORT_PUSH_ATOMIC 8192
-#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 *);