listener: if no new lines, don't save history.

* linenoise/linenoise.c (lino_have_new_lines): New function.

* linenoise/linenoise.h (lino_have_new_lines): Declared.

* parser.c (hist_save): Do nothing if lino_have_new_lines
returns false.

1 files changed, 1 insertions, 1 deletions

diff --git a/parser.c b/parser.c
index bcdb0005..4da0b150 100644
--- a/parser.c
+++ b/parser.c
@@ -1330,7 +1330,7 @@ static void hist_save(lino_t *ls, val in_stream, val out_stream,
                       val histfile, const wchar_t *histfile_w,
                       val hist_len_var)
 {
-  if (histfile_w) {
+  if (histfile_w && lino_have_new_lines(ls)) {
     val histfile_tmp = format(nil, lit("~a.tmp"), histfile, nao);
     const wchar_t *histfile_tmp_w = c_str(histfile_tmp);
     lino_t *ltmp = lino_make(coerce(mem_t *, in_stream),