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Merge branch 'jt/clone-recursesub-ref-advise'

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The interaction between "git clone --recurse-submodules" and
alternate object store was ill-designed.  The documentation and
code have been taught to make more clear recommendations when the
users see failures.

* jt/clone-recursesub-ref-advise:
  submodule--helper: advise on fatal alternate error
  Doc: explain submodule.alternateErrorStrategy
This commit is contained in:
Junio C Hamano
2019-12-10 13:11:43 -08:00
parent dac30e7b5d 4f3e57ef13
commit 5dd1d59d35
5 changed files with 19 additions and 1 deletions
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10
builtin/submodule--helper.c
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@ -20,6 +20,7 @@
#include "diff.h"
#include "object-store.h"
#include "dir.h"
#include "advice.h"
#define OPT_QUIET (1 << 0)
#define OPT_CACHED (1 << 1)
@ -1270,6 +1271,13 @@ struct submodule_alternate_setup {
#define SUBMODULE_ALTERNATE_SETUP_INIT { NULL, \
SUBMODULE_ALTERNATE_ERROR_IGNORE, NULL }
static const char alternate_error_advice[] = N_(
"An alternate computed from a superproject's alternate is invalid.\n"
"To allow Git to clone without an alternate in such a case, set\n"
"submodule.alternateErrorStrategy to 'info' or, equivalently, clone with\n"
"'--reference-if-able' instead of '--reference'."
);
static int add_possible_reference_from_superproject(
struct object_directory *odb, void *sas_cb)
{
@ -1301,6 +1309,8 @@ static int add_possible_reference_from_superproject(
} else {
switch (sas->error_mode) {
case SUBMODULE_ALTERNATE_ERROR_DIE:
if (advice_submodule_alternate_error_strategy_die)
advise(_(alternate_error_advice));
die(_("submodule '%s' cannot add alternate: %s"),
sas->submodule_name, err.buf);
case SUBMODULE_ALTERNATE_ERROR_INFO: