From 56f51c59af7d24ad6f7aa53ff1007d798001abbc Mon Sep 17 00:00:00 2001
From: Patrick Pelissier <patrick.pelissier@gmail.com>
Date: Sat, 11 Feb 2023 23:47:11 +0100
Subject: [PATCH] Add comments about locale dependent functions.

---
 m-core.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/m-core.h b/m-core.h
index 5f1ce712..934289c3 100644
--- a/m-core.h
+++ b/m-core.h
@@ -30,9 +30,9 @@
 #include <stdint.h>
 #include <limits.h>
 #include <string.h>
-#include <ctype.h>
+#include <ctype.h> /* For toupper, tolower, isprint, isspace */
 #include <assert.h>
-#include <stdlib.h>  /* For abort, malloc, realloc, free, strtol, strtoul, strtoll, strtoull, strtod, strtold, rand */
+#include <stdlib.h>  /* For abort, malloc, realloc, free, strtol, strtoul, strtoll, strtoull, strtof, strtod, strtold, rand */
 
 /* By default, always use stdio. Can be turned off in specific environment if needed
    by defining M_USE_STDIO to 0 */
@@ -57,6 +57,12 @@
 # define M_USE_SMALL_NAME 1
 #endif
 
+/* Used functions of the libc which are locale dependent:
+   toupper, tolower, isprint, isspace
+   strtol, strtoul, strtoll, strtoull, strtof, strtod, strtold
+   printf, fprintf, fscanf
+   Theses functions may behave differently in function of the locale.
+*/
 
 /***************************************************************/
 /************************ Compiler Macro ***********************/