Index: tools/gn/function_foreach.cc |
diff --git a/tools/gn/function_foreach.cc b/tools/gn/function_foreach.cc |
index 504fa6c737a39bd7e384ae09485bbbe4a5de75db..549ebe407c1ec93287922ab29ecb5ab9c22baa54 100644 |
--- a/tools/gn/function_foreach.cc |
+++ b/tools/gn/function_foreach.cc |
@@ -20,7 +20,8 @@ const char kForEach_Help[] = |
" }\n" |
"\n" |
" Executes the loop contents block over each item in the list,\n" |
- " assigning the loop_var to each item in sequence.\n" |
+ " assigning the loop_var to each item in sequence. The loop_var will be\n" |
+ " a copy so assigning to it will not mutate the list.\n" |
"\n" |
" The block does not introduce a new scope, so that variable assignments\n" |
" inside the loop will be visible once the loop terminates.\n" |