Only run the merge tool on files with differences

If the backup file and the data file are equal, there is no need to run
the merge tool.

Signed-off-by: Lukas Fleischer <calcurse@cryptocrack.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/calcurse.h b/src/calcurse.h
index e125021..6d592f7 100644
--- a/src/calcurse.h
+++ b/src/calcurse.h
@@ -781,6 +781,7 @@ void io_stop_psave_thread(void);
 void io_set_lock(void);
 unsigned io_dump_pid(char *);
 unsigned io_get_pid(char *);
+int io_files_equal(const char *, const char *);
 int io_file_is_empty(char *);
 int io_file_cp(const char *, const char *);
 void io_unset_modified(void);