1 files changed, 14 insertions, 5 deletions

diff --git a/sway/commands/input/map_from_region.c b/sway/commands/input/map_from_region.c
index de00b714..2f8f753d 100644
--- a/sway/commands/input/map_from_region.c
+++ b/sway/commands/input/map_from_region.c
@@ -1,4 +1,3 @@
-#define _POSIX_C_SOURCE 200809L
 #include <stdbool.h>
 #include <string.h>
 #include <strings.h>
@@ -11,11 +10,21 @@ static bool parse_coords(const char *str, double *x, double *y, bool *mm) {
         *mm = false;
 
         char *end;
-        *x = strtod(str, &end);
-        if (end[0] != 'x') {
-                return false;
+
+        // Check for "0x" prefix to avoid strtod treating the string as hex
+        if (str[0] == '0' && str[1] == 'x') {
+                if (strlen(str) < 3) {
+                        return false;
+                }
+                *x = 0;
+                end = (char *)str + 2;
+        } else {
+                *x = strtod(str, &end);
+                if (end[0] != 'x') {
+                        return false;
+                }
+                ++end;
         }
-        ++end;
 
         *y = strtod(end, &end);
         if (end[0] == 'm') {