Fix: RTRIM changes input string

Joe7M · Joe7M · commit d24529f6c9b1 · 2023-09-04T21:44:46.000+02:00
diff --git a/src/common/blib_func.c b/src/common/blib_func.c
@@ -1053,8 +1053,8 @@ void cmd_str1(long funcCode, var_t *arg, var_t *r) {
     uint32_t len = strlen(arg->v.p.ptr);
     if (*p != '\0') {
       p = p + len - 1; 
-      while (is_wspace(*p)) {
-        len--;
+      while (p >= arg->v.p.ptr && is_wspace(*p)) {
+        len--;      
         p--;
       }
     }

Original file line number	Diff line number	Diff line change
`@@ -1053,8 +1053,8 @@ void cmd_str1(long funcCode, var_t arg, var_t r) {`
`1053`	`1053`	`uint32_t len = strlen(arg->v.p.ptr);`
`1054`	`1054`	`if (*p != '\0') {`
`1055`	`1055`	`p = p + len - 1;`
`1056`		`- while (is_wspace(*p)) {`
`1057`		`- len--;`
	`1056`	`+ while (p >= arg->v.p.ptr && is_wspace(*p)) {`
	`1057`	`+ len--;`
`1058`	`1058`	`p--;`
`1059`	`1059`	`}`
`1060`	`1060`	`}`