Add a new variable `inhibit-interaction'

* doc/lispref/elisp.texi (Top): Add a link.
* doc/lispref/errors.texi (Standard Errors): Mention the new error.

* doc/lispref/minibuf.texi (Minibuffers): Add a link.
(Inhibiting Interaction): New node.

* src/data.c (syms_of_data): Define the `inhibited-interaction' error.

* src/lisp.h: Export the barfing function.

* src/lread.c (Fread_char, Fread_event, Fread_char_exclusive):
Barf if inhibited.

* src/minibuf.c (barf_if_interaction_inhibited): New function.
(Fread_from_minibuffer, Fread_no_blanks_input): Barf if inhibited.
(syms_of_minibuf): Define the `inhibit-interaction' variable.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/data.c b/src/data.c
index d420bf5fc58..35a6890b9bd 100644
--- a/src/data.c
+++ b/src/data.c
@@ -3760,6 +3760,7 @@ syms_of_data (void)
   DEFSYM (Qbuffer_read_only, "buffer-read-only");
   DEFSYM (Qtext_read_only, "text-read-only");
   DEFSYM (Qmark_inactive, "mark-inactive");
+  DEFSYM (Qinhibited_interaction, "inhibited-interaction");
 
   DEFSYM (Qlistp, "listp");
   DEFSYM (Qconsp, "consp");
@@ -3844,6 +3845,8 @@ syms_of_data (void)
   PUT_ERROR (Qbuffer_read_only, error_tail, "Buffer is read-only");
   PUT_ERROR (Qtext_read_only, pure_cons (Qbuffer_read_only, error_tail),
              "Text is read-only");
+  PUT_ERROR (Qinhibited_interaction, error_tail,
+             "User interaction while inhibited");
 
   DEFSYM (Qrange_error, "range-error");
   DEFSYM (Qdomain_error, "domain-error");