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Diffstat (limited to 'src/nvim/eval.c')
-rw-r--r--src/nvim/eval.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/src/nvim/eval.c b/src/nvim/eval.c
index e409d57bfd..be761afa1f 100644
--- a/src/nvim/eval.c
+++ b/src/nvim/eval.c
@@ -7078,7 +7078,7 @@ static void f_assert_exception(typval_T *argvars, typval_T *rettv, FunPtr fptr)
rettv->vval.v_number = assert_exception(argvars);
}
-/// "assert_fails(cmd [, error])" function
+/// "assert_fails(cmd [, error [, msg]])" function
static void f_assert_fails(typval_T *argvars, typval_T *rettv, FunPtr fptr)
{
const char *const cmd = tv_get_string_chk(&argvars[0]);
@@ -7096,7 +7096,14 @@ static void f_assert_fails(typval_T *argvars, typval_T *rettv, FunPtr fptr)
if (!called_emsg) {
prepare_assert_error(&ga);
ga_concat(&ga, (const char_u *)"command did not fail: ");
- ga_concat(&ga, (const char_u *)cmd);
+ if (argvars[1].v_type != VAR_UNKNOWN
+ && argvars[2].v_type != VAR_UNKNOWN) {
+ char *const tofree = encode_tv2echo(&argvars[2], NULL);
+ ga_concat(&ga, (char_u *)tofree);
+ xfree(tofree);
+ } else {
+ ga_concat(&ga, (const char_u *)cmd);
+ }
assert_error(&ga);
ga_clear(&ga);
ret = 1;