date: support '-' format flag to remove zero padding

The strftime provided by the Microsoft C runtime uses '#' as the
format string flag to remove zero padding; glibc uses '-'.

Support the use of the '-' flag for improved compatibility.

1 files changed, 5 insertions, 0 deletions

diff --git a/win32/mingw.c b/win32/mingw.c
index afcb6c6d2..a55fb4f40 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -905,6 +905,11 @@ size_t mingw_strftime(char *buf, size_t max, const char *format, const struct tm
                                 t = newfmt + m + 1;
                                 fmt = newfmt;
                         }
+                        else if ( t[1] == '-' && t[2] != '\0' &&
+                                                strchr("dHIjmMSUwWyY", t[2]) ) {
+                                /* Microsoft uses '#' rather than '-' to remove padding */
+                                t[1] = '#';
+                        }
                         else if ( t[1] != '\0' ) {
                                 ++t;
                         }