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-rw-r--r--src/nvim/eval.c40
-rw-r--r--src/nvim/testdir/test_eval_stuff.vim8
-rw-r--r--src/nvim/testdir/test_vimscript.vim20
3 files changed, 58 insertions, 10 deletions
diff --git a/src/nvim/eval.c b/src/nvim/eval.c
index 8421d8978a..dccad5a2d0 100644
--- a/src/nvim/eval.c
+++ b/src/nvim/eval.c
@@ -69,6 +69,7 @@ static char *e_nowhitespace
static char *e_invalwindow = N_("E957: Invalid window number");
static char *e_lock_unlock = N_("E940: Cannot lock or unlock variable %s");
static char *e_write2 = N_("E80: Error while writing: %s");
+static char *e_string_list_or_blob_required = N_("E1098: String, List or Blob required");
// TODO(ZyX-I): move to eval/executor
static char *e_letwrong = N_("E734: Wrong variable type for %s=");
@@ -112,9 +113,11 @@ typedef struct {
int fi_semicolon; // TRUE if ending in '; var]'
int fi_varcount; // nr of variables in the list
listwatch_T fi_lw; // keep an eye on the item used.
- list_T *fi_list; // list being used
+ list_T *fi_list; // list being used
int fi_bi; // index of blob
blob_T *fi_blob; // blob being used
+ char_u *fi_string; // copy of string being used
+ int fi_byte_idx; // byte index in fi_string
} forinfo_T;
// values for vv_flags:
@@ -2641,8 +2644,15 @@ void *eval_for_line(const char_u *arg, bool *errp, char_u **nextcmdp, int skip)
fi->fi_blob = btv.vval.v_blob;
}
tv_clear(&tv);
+ } else if (tv.v_type == VAR_STRING) {
+ fi->fi_byte_idx = 0;
+ fi->fi_string = tv.vval.v_string;
+ tv.vval.v_string = NULL;
+ if (fi->fi_string == NULL) {
+ fi->fi_string = vim_strsave((char_u *)"");
+ }
} else {
- emsg(_(e_listblobreq));
+ emsg(_(e_string_list_or_blob_required));
tv_clear(&tv);
}
}
@@ -2679,6 +2689,22 @@ bool next_for_item(void *fi_void, char_u *arg)
fi->fi_semicolon, fi->fi_varcount, false, NULL) == OK;
}
+ if (fi->fi_string != NULL) {
+ const int len = utfc_ptr2len(fi->fi_string + fi->fi_byte_idx);
+ if (len == 0) {
+ return false;
+ }
+ typval_T tv;
+ tv.v_type = VAR_STRING;
+ tv.v_lock = VAR_FIXED;
+ tv.vval.v_string = vim_strnsave(fi->fi_string + fi->fi_byte_idx, len);
+ fi->fi_byte_idx += len;
+ const int result
+ = ex_let_vars(arg, &tv, true, fi->fi_semicolon, fi->fi_varcount, false, NULL) == OK;
+ xfree(tv.vval.v_string);
+ return result;
+ }
+
listitem_T *item = fi->fi_lw.lw_item;
if (item == NULL) {
return false;
@@ -2698,12 +2724,16 @@ void free_for_info(void *fi_void)
{
forinfo_T *fi = (forinfo_T *)fi_void;
- if (fi != NULL && fi->fi_list != NULL) {
+ if (fi == NULL) {
+ return;
+ }
+ if (fi->fi_list != NULL) {
tv_list_watch_remove(fi->fi_list, &fi->fi_lw);
tv_list_unref(fi->fi_list);
- }
- if (fi != NULL && fi->fi_blob != NULL) {
+ } else if (fi->fi_blob != NULL) {
tv_blob_unref(fi->fi_blob);
+ } else {
+ xfree(fi->fi_string);
}
xfree(fi);
}
diff --git a/src/nvim/testdir/test_eval_stuff.vim b/src/nvim/testdir/test_eval_stuff.vim
index 883ba5de3d..95eccde35c 100644
--- a/src/nvim/testdir/test_eval_stuff.vim
+++ b/src/nvim/testdir/test_eval_stuff.vim
@@ -65,11 +65,9 @@ func Test_E963()
endfunc
func Test_for_invalid()
- " Vim gives incorrect emsg here until v8.2.3284, but the exact emsg from that
- " patch cannot be used until v8.2.2658 is ported (for loop over Strings)
- call assert_fails("for x in 99", 'E897:')
- call assert_fails("for x in function('winnr')", 'E897:')
- call assert_fails("for x in {'a': 9}", 'E897:')
+ call assert_fails("for x in 99", 'E1098:')
+ call assert_fails("for x in function('winnr')", 'E1098:')
+ call assert_fails("for x in {'a': 9}", 'E1098:')
if 0
/1/5/2/s/\n
diff --git a/src/nvim/testdir/test_vimscript.vim b/src/nvim/testdir/test_vimscript.vim
index 34733f127f..c59cab5f36 100644
--- a/src/nvim/testdir/test_vimscript.vim
+++ b/src/nvim/testdir/test_vimscript.vim
@@ -1692,6 +1692,26 @@ func Test_function_defined_line()
call delete('Xtest.vim')
endfunc
+func Test_for_over_string()
+ let res = ''
+ for c in 'aéc̀d'
+ let res ..= c .. '-'
+ endfor
+ call assert_equal('a-é-c̀-d-', res)
+
+ let res = ''
+ for c in ''
+ let res ..= c .. '-'
+ endfor
+ call assert_equal('', res)
+
+ let res = ''
+ for c in v:_null_string
+ let res ..= c .. '-'
+ endfor
+ call assert_equal('', res)
+endfunc
+
"-------------------------------------------------------------------------------
" Modelines {{{1
" vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker