>From a8a414323e3c8c5a386d1a32b4c07d0efe753ba7 Mon Sep 17 00:00:00 2001
From: Rich Felker <dalias@aerifal.cx>
Date: Sat, 3 Oct 2026 23:08:43 -0400
Subject: [PATCH 09/10] move the digit grouper interface to locale_impl.h

this is in preparation for reworking strfmon to use it.
---
 src/internal/locale_impl.h | 9 +++++++++
 src/stdio/vfprintf.c       | 7 -------
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/src/internal/locale_impl.h b/src/internal/locale_impl.h
index 191f916b..0f49e99d 100644
--- a/src/internal/locale_impl.h
+++ b/src/internal/locale_impl.h
@@ -32,6 +32,13 @@ struct __locale_struct {
 	struct lconv *lconv;
 };
 
+struct digit_grouper {
+	const char *g;
+	int pos;
+	int rep;
+	int rem;
+};
+
 extern hidden volatile int __locale_lock[1];
 
 extern hidden const struct __locale_map __c_dot_utf8;
@@ -41,6 +48,8 @@ extern hidden const struct __locale_struct __c_dot_utf8_locale;
 hidden const struct __locale_map *__get_locale(int, const char *);
 hidden void __lconv_expand(locale_t);
 hidden int __radixpt(locale_t);
+hidden int __count_groupings(struct digit_grouper *, int, const char *);
+hidden char *__expand_grouping(char *, char *, struct digit_grouper *, const char *, size_t);
 hidden const char *__loc_lookup(const unsigned char *, const unsigned char *, const int *, const int *);
 hidden const char *__mo_lookup(const void *, size_t, const char *);
 hidden int __loc_is_allocated(locale_t);
diff --git a/src/stdio/vfprintf.c b/src/stdio/vfprintf.c
index 097b7619..b2a59441 100644
--- a/src/stdio/vfprintf.c
+++ b/src/stdio/vfprintf.c
@@ -172,13 +172,6 @@ static char *fmt_u(uintmax_t x, char *s)
 	return s;
 }
 
-struct digit_grouper {
-	const char *g;
-	int pos;
-	int rep;
-	int rem;
-};
-
 int __count_groupings(struct digit_grouper *dg, int l, const char *g)
 {
 	int i, cnt = 0;
-- 
2.21.0