Merge from origin/emacs-27

e7a3ed8a6d Fix tab-bar-tab-name-ellipsis initialization
4737d0af75 Fix Elisp manual entry for format-spec
0195809bb6 Fix rare assertion violations in 'etags'
cddb0079ff ; * lisp/format-spec.el (format-spec): Fix typo.

1 files changed, 5 insertions, 2 deletions

diff --git a/lib-src/etags.c b/lib-src/etags.c
index 4672e3491da..146cf612505 100644
--- a/lib-src/etags.c
+++ b/lib-src/etags.c
@@ -1985,8 +1985,11 @@ pfnote (char *name, bool is_func, char *linestart, ptrdiff_t linelen,
 {
   register node *np;
 
-  assert (name == NULL || name[0] != '\0');
-  if (CTAGS && name == NULL)
+  if ((CTAGS && name == NULL)
+      /* We used to have an assertion here for the case below, but if we hit
+         that case, it just means our parser got confused, and there's nothing
+         to do about such empty "tags".  */
+      || (!CTAGS && name && name[0] == '\0'))
     return;
 
   np = xnew (1, node);