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[PATCH v2 11/19] pull: check if in unresolved merge state

From
Paul Tan <pyokagan@gmail.com>
Date
Jun 3, 2015, 06:48 UTC
Message-ID
<1433314143-4478-12-git-send-email-pyokagan@gmail.com>
In-Reply-To
<1433314143-4478-1-git-send-email-pyokagan@gmail.com>

Since d38a30d (Be more user-friendly when refusing to do something because of conflict., 2010-01-12), git-pull will error out with user-friendly advices if the user is in the middle of a merge or has unmerged files.

Re-implement this behavior. While the "has unmerged files" case can be handled by die_resolve_conflict(), we introduce a new function die_conclude_merge() for printing a different error message for when there are no unmerged files but the merge has not been finished.

Signed-off-by: Paul Tan <pyokagan@gmail.com>
---
 advice.c       | 8 ++++++++
 advice.h       | 1 +
 builtin/pull.c | 9 +++++++++
 3 files changed, 18 insertions(+)
diff --git a/advice.c b/advice.c
index 575bec2..4965686 100644
--- a/advice.c
+++ b/advice.c
@@ -96,6 +96,14 @@ void NORETURN die_resolve_conflict(const char *me)
 	die("Exiting because of an unresolved conflict.");
 }
 
+void NORETURN die_conclude_merge(void)
+{
+	error(_("You have not concluded your merge (MERGE_HEAD exists)."));
+	if (advice_resolve_conflict)
+		advise(_("Please, commit your changes before you can merge."));
+	die(_("Exiting because of unfinished merge."));
+}
+
 void detach_advice(const char *new_name)
 {
 	const char fmt[] =
diff --git a/advice.h b/advice.h
index 5ecc6c1..b341a55 100644
--- a/advice.h
+++ b/advice.h
@@ -24,6 +24,7 @@ __attribute__((format (printf, 1, 2)))
 void advise(const char *advice, ...);
 int error_resolve_conflict(const char *me);
 extern void NORETURN die_resolve_conflict(const char *me);
+void NORETURN die_conclude_merge(void);
 void detach_advice(const char *new_name);
 
 #endif /* ADVICE_H */
diff --git a/builtin/pull.c b/builtin/pull.c
index 1c1883d..703fc1d 100644
--- a/builtin/pull.c
+++ b/builtin/pull.c
@@ -12,6 +12,7 @@
 #include "run-command.h"
 #include "sha1-array.h"
 #include "remote.h"
+#include "dir.h"
 
 static const char * const pull_usage[] = {
 	N_("git pull [options] [<repository> [<refspec>...]]"),
@@ -422,6 +423,14 @@ int cmd_pull(int argc, const char **argv, const char *prefix)
 
 	parse_repo_refspecs(argc, argv, &repo, &refspecs);
 
+	git_config(git_default_config, NULL);
+
+	if (read_cache_unmerged())
+		die_resolve_conflict("Pull");
+
+	if (file_exists(git_path("MERGE_HEAD")))
+		die_conclude_merge();
+
 	if (!opt_ff.len)
 		config_get_ff(&opt_ff);
 
-- 
2.1.4
Previous: Junio C HamanoNext: Junio C Hamano
Message 24 of 48 in “Make git-pull a builtin”
  1. 00/19 Make git-pull a builtinPaul Tan, Jun 3, 2015
  2. 01/19 parse-options-cb: implement parse_opt_pass_strbuf()Paul Tan, Jun 3, 2015
  3. Junio C HamanoJun 9, 2015
  4. 02/19 parse-options-cb: implement parse_opt_pass_argv_array()Paul Tan, Jun 3, 2015
  5. Stefan BellerJun 3, 2015
  6. Junio C HamanoJun 9, 2015
  7. Paul TanJun 10, 2015
  8. Junio C HamanoJun 10, 2015
  9. 03/19 argv-array: implement argv_array_pushv()Paul Tan, Jun 3, 2015
  10. 04/19 pull: implement skeletal builtin pullPaul Tan, Jun 3, 2015
  11. Junio C HamanoJun 10, 2015
  12. 05/19 pull: implement fetch + mergePaul Tan, Jun 3, 2015
  13. Junio C HamanoJun 9, 2015
  14. 06/19 pull: pass verbosity, --progress flags to fetch and mergePaul Tan, Jun 3, 2015
  15. Junio C HamanoJun 9, 2015
  16. 07/19 pull: pass git-merge's options to git-mergePaul Tan, Jun 3, 2015
  17. 08/19 pull: pass git-fetch's options to git-fetchPaul Tan, Jun 3, 2015
  18. Stefan BellerJun 3, 2015
  19. 09/19 pull: error on no merge candidatesPaul Tan, Jun 3, 2015
  20. Junio C HamanoJun 9, 2015
  21. Paul TanJun 13, 2015
  22. 10/19 pull: support pull.ff configPaul Tan, Jun 3, 2015
  23. Junio C HamanoJun 9, 2015
  24. 11/19 pull: check if in unresolved merge statePaul Tan, Jun 3, 2015
  25. Junio C HamanoJun 10, 2015
  26. Junio C HamanoJun 10, 2015
  27. Paul TanJun 10, 2015
  28. Junio C HamanoJun 10, 2015
  29. Paul TanJun 14, 2015
  30. 12/19 pull: fast-forward working tree if head is updatedPaul Tan, Jun 3, 2015
  31. 13/19 pull: implement pulling into an unborn branchPaul Tan, Jun 3, 2015
  32. Junio C HamanoJun 10, 2015
  33. 14/19 pull: set reflog messagePaul Tan, Jun 3, 2015
  34. 15/19 pull: teach git pull about --rebasePaul Tan, Jun 3, 2015
  35. Junio C HamanoJun 10, 2015
  36. Paul TanJun 10, 2015
  37. Junio C HamanoJun 10, 2015
  38. Paul TanJun 10, 2015
  39. Junio C HamanoJun 10, 2015
  40. Junio C HamanoJun 10, 2015
  41. 16/19 pull: configure --rebase via branch.<name>.rebase or pull.rebasePaul Tan, Jun 3, 2015
  42. 17/19 pull --rebase: exit early when the working directory is dirtyPaul Tan, Jun 3, 2015
  43. Kevin DaudtJun 3, 2015
  44. Kevin DaudtJun 10, 2015
  45. 18/19 pull --rebase: error on no merge candidate casesPaul Tan, Jun 3, 2015
  46. Stefan BellerJun 3, 2015
  47. 19/19 pull: remove redirection to git-pull.shPaul Tan, Jun 3, 2015
  48. Stefan BellerJun 3, 2015

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