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[src/trunk]: src/lib/libedit PR/51517: Jay West: Tty settings not restored on...
details: https://anonhg.NetBSD.org/src/rev/11717b0a0d68
branches: trunk
changeset: 826398:11717b0a0d68
user: christos <christos%NetBSD.org@localhost>
date: Fri Sep 01 10:19:10 2017 +0000
description:
PR/51517: Jay West: Tty settings not restored on exit
PR/51518: Jay West: prompt is interleaved with client output
Both these issues are caused by rl_restore_handler not DTRT; fix
it so that it kills the internal libedit state completely. This is
inefficient, but it works.
Also fix:
1. add append_history()/H_NSAVE_FP
2. call the rl_startup_hook before printing the first prompt as documented.
callint it from rl_initialize breaks python, because the callback ends
up being invoked before the readline module is installed, and we end up
dereferencing a NULL pointer.
3. add el_resize_terminal.
With those changes, s/lreadline/ledit/g in python works.
diffstat:
lib/libedit/editline.3 | 11 ++++++++-
lib/libedit/hist.h | 19 +++++++++--------
lib/libedit/histedit.h | 3 +-
lib/libedit/history.c | 35 +++++++++++++++++++++++---------
lib/libedit/readline.c | 44 +++++++++++++++++++++++++++++++++++-----
lib/libedit/readline/readline.h | 4 ++-
6 files changed, 87 insertions(+), 29 deletions(-)
diffs (293 lines):
diff -r e2a42d92b946 -r 11717b0a0d68 lib/libedit/editline.3
--- a/lib/libedit/editline.3 Fri Sep 01 07:29:56 2017 +0000
+++ b/lib/libedit/editline.3 Fri Sep 01 10:19:10 2017 +0000
@@ -1,4 +1,4 @@
-.\" $NetBSD: editline.3,v 1.96 2017/07/03 21:32:50 wiz Exp $
+.\" $NetBSD: editline.3,v 1.97 2017/09/01 10:19:10 christos Exp $
.\"
.\" Copyright (c) 1997-2014 The NetBSD Foundation, Inc.
.\" All rights reserved.
@@ -26,7 +26,7 @@
.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
.\" POSSIBILITY OF SUCH DAMAGE.
.\"
-.Dd June 27, 2017
+.Dd September 1, 2017
.Dt EDITLINE 3
.Os
.Sh NAME
@@ -843,6 +843,13 @@
.Ft FILE
pointer
.Fa fp .
+.It Dv H_NSAVE_FP , Fa "size_t n" , Fa "FILE *fp"
+Save the last
+.Ft n
+history entries to the opened
+.Ft FILE
+pointer
+.Fa fp .
.It Dv H_SETUNIQUE , Fa "int unique"
Set flag that adjacent identical event strings should not be entered
into the history.
diff -r e2a42d92b946 -r 11717b0a0d68 lib/libedit/hist.h
--- a/lib/libedit/hist.h Fri Sep 01 07:29:56 2017 +0000
+++ b/lib/libedit/hist.h Fri Sep 01 10:19:10 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: hist.h,v 1.22 2016/05/09 21:46:56 christos Exp $ */
+/* $NetBSD: hist.h,v 1.23 2017/09/01 10:19:10 christos Exp $ */
/*-
* Copyright (c) 1992, 1993
@@ -59,14 +59,15 @@
(((el)->el_flags & NARROW_HISTORY) ? hist_convert(el, fn, arg) : \
HIST_FUN_INTERNAL(el, fn, arg))
-#define HIST_NEXT(el) HIST_FUN(el, H_NEXT, NULL)
-#define HIST_FIRST(el) HIST_FUN(el, H_FIRST, NULL)
-#define HIST_LAST(el) HIST_FUN(el, H_LAST, NULL)
-#define HIST_PREV(el) HIST_FUN(el, H_PREV, NULL)
-#define HIST_SET(el, num) HIST_FUN(el, H_SET, num)
-#define HIST_LOAD(el, fname) HIST_FUN(el, H_LOAD fname)
-#define HIST_SAVE(el, fname) HIST_FUN(el, H_SAVE fname)
-#define HIST_SAVE_FP(el, fp) HIST_FUN(el, H_SAVE_FP fp)
+#define HIST_NEXT(el) HIST_FUN(el, H_NEXT, NULL)
+#define HIST_FIRST(el) HIST_FUN(el, H_FIRST, NULL)
+#define HIST_LAST(el) HIST_FUN(el, H_LAST, NULL)
+#define HIST_PREV(el) HIST_FUN(el, H_PREV, NULL)
+#define HIST_SET(el, num) HIST_FUN(el, H_SET, num)
+#define HIST_LOAD(el, fname) HIST_FUN(el, H_LOAD fname)
+#define HIST_SAVE(el, fname) HIST_FUN(el, H_SAVE fname)
+#define HIST_SAVE_FP(el, fp) HIST_FUN(el, H_SAVE_FP, fp)
+#define HIST_NSAVE_FP(el, n, fp) HIST_FUN(el, H_NSAVE_FP, n, fp)
libedit_private int hist_init(EditLine *);
libedit_private void hist_end(EditLine *);
diff -r e2a42d92b946 -r 11717b0a0d68 lib/libedit/histedit.h
--- a/lib/libedit/histedit.h Fri Sep 01 07:29:56 2017 +0000
+++ b/lib/libedit/histedit.h Fri Sep 01 10:19:10 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: histedit.h,v 1.56 2016/04/19 19:50:53 christos Exp $ */
+/* $NetBSD: histedit.h,v 1.57 2017/09/01 10:19:10 christos Exp $ */
/*-
* Copyright (c) 1992, 1993
@@ -226,6 +226,7 @@
#define H_DELDATA 24 /* , int, histdata_t *);*/
#define H_REPLACE 25 /* , const char *, histdata_t); */
#define H_SAVE_FP 26 /* , FILE *); */
+#define H_NSAVE_FP 27 /* , size_t, FILE *); */
diff -r e2a42d92b946 -r 11717b0a0d68 lib/libedit/history.c
--- a/lib/libedit/history.c Fri Sep 01 07:29:56 2017 +0000
+++ b/lib/libedit/history.c Fri Sep 01 10:19:10 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: history.c,v 1.57 2016/04/11 18:56:31 christos Exp $ */
+/* $NetBSD: history.c,v 1.58 2017/09/01 10:19:10 christos Exp $ */
/*-
* Copyright (c) 1992, 1993
@@ -37,7 +37,7 @@
#if 0
static char sccsid[] = "@(#)history.c 8.1 (Berkeley) 6/4/93";
#else
-__RCSID("$NetBSD: history.c,v 1.57 2016/04/11 18:56:31 christos Exp $");
+__RCSID("$NetBSD: history.c,v 1.58 2017/09/01 10:19:10 christos Exp $");
#endif
#endif /* not lint && not SCCSID */
@@ -140,7 +140,7 @@
static int history_set_fun(TYPE(History) *, TYPE(History) *);
static int history_load(TYPE(History) *, const char *);
static int history_save(TYPE(History) *, const char *);
-static int history_save_fp(TYPE(History) *, FILE *);
+static int history_save_fp(TYPE(History) *, size_t, FILE *);
static int history_prev_event(TYPE(History) *, TYPE(HistEvent) *, int);
static int history_next_event(TYPE(History) *, TYPE(HistEvent) *, int);
static int history_next_string(TYPE(History) *, TYPE(HistEvent) *,
@@ -825,7 +825,7 @@
* TYPE(History) save function
*/
static int
-history_save_fp(TYPE(History) *h, FILE *fp)
+history_save_fp(TYPE(History) *h, size_t nelem, FILE *fp)
{
TYPE(HistEvent) ev;
int i = -1, retval;
@@ -838,14 +838,22 @@
if (fchmod(fileno(fp), S_IRUSR|S_IWUSR) == -1)
goto done;
- if (fputs(hist_cookie, fp) == EOF)
+ if (ftell(fp) == 0 && fputs(hist_cookie, fp) == EOF)
goto done;
ptr = h_malloc((max_size = 1024) * sizeof(*ptr));
if (ptr == NULL)
goto done;
- for (i = 0, retval = HLAST(h, &ev);
- retval != -1;
- retval = HPREV(h, &ev), i++) {
+ if (nelem != (size_t)-1) {
+ for (retval = HFIRST(h, &ev); retval != -1 && nelem-- > 0;
+ retval = HNEXT(h, &ev))
+ continue;
+ } else
+ retval = -1;
+
+ if (retval == -1)
+ retval = HLAST(h, &ev);
+
+ for (i = 0; retval != -1; retval = HPREV(h, &ev), i++) {
str = ct_encode_string(ev.str, &conv);
len = strlen(str) * 4 + 1;
if (len > max_size) {
@@ -880,7 +888,7 @@
if ((fp = fopen(fname, "w")) == NULL)
return -1;
- i = history_save_fp(h, fp);
+ i = history_save_fp(h, (size_t)-1, fp);
(void) fclose(fp);
return i;
@@ -1068,7 +1076,14 @@
break;
case H_SAVE_FP:
- retval = history_save_fp(h, va_arg(va, FILE *));
+ retval = history_save_fp(h, (size_t)-1, va_arg(va, FILE *));
+ if (retval == -1)
+ he_seterrev(ev, _HE_HIST_WRITE);
+ break;
+
+ case H_NSAVE_FP:
+ retval = history_save_fp(h, va_arg(va, size_t),
+ va_arg(va, FILE *));
if (retval == -1)
he_seterrev(ev, _HE_HIST_WRITE);
break;
diff -r e2a42d92b946 -r 11717b0a0d68 lib/libedit/readline.c
--- a/lib/libedit/readline.c Fri Sep 01 07:29:56 2017 +0000
+++ b/lib/libedit/readline.c Fri Sep 01 10:19:10 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: readline.c,v 1.141 2017/04/21 05:38:03 abhinav Exp $ */
+/* $NetBSD: readline.c,v 1.142 2017/09/01 10:19:10 christos Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
@@ -31,7 +31,7 @@
#include "config.h"
#if !defined(lint) && !defined(SCCSID)
-__RCSID("$NetBSD: readline.c,v 1.141 2017/04/21 05:38:03 abhinav Exp $");
+__RCSID("$NetBSD: readline.c,v 1.142 2017/09/01 10:19:10 christos Exp $");
#endif /* not lint && not SCCSID */
#include <sys/types.h>
@@ -122,6 +122,7 @@
int _rl_print_completions_horizontally = 0;
VFunction *rl_redisplay_function = NULL;
Function *rl_startup_hook = NULL;
+int rl_did_startup_hook = 0;
VFunction *rl_completion_display_matches_hook = NULL;
VFunction *rl_prep_term_function = (VFunction *)rl_prep_terminal;
VFunction *rl_deprep_term_function = (VFunction *)rl_deprep_terminal;
@@ -385,9 +386,6 @@
_resize_fun(e, &rl_line_buffer);
_rl_update_pos();
- if (rl_startup_hook)
- (*rl_startup_hook)(NULL, 0);
-
return 0;
}
@@ -408,6 +406,11 @@
if (e == NULL || h == NULL)
rl_initialize();
+ if (rl_did_startup_hook == 0 && rl_startup_hook) {
+ rl_did_startup_hook = 1;
+ (*rl_startup_hook)(NULL, 0);
+ }
+
rl_done = 0;
@@ -1365,6 +1368,28 @@
(errno ? errno : EINVAL) : 0;
}
+int
+append_history(int n, const char *filename)
+{
+ HistEvent ev;
+ FILE *fp;
+
+ if (h == NULL || e == NULL)
+ rl_initialize();
+ if (filename == NULL && (filename = _default_history_file()) == NULL)
+ return errno;
+
+ if ((fp = fopen(filename, "a")) == NULL)
+ return errno;
+
+ if (history(h, &ev, H_NSAVE_FP, (size_t)n, fp) == -1) {
+ int serrno = errno ? errno : EINVAL;
+ fclose(fp);
+ return serrno;
+ }
+ fclose(fp);
+ return 0;
+}
/*
* returns history ``num''th event
@@ -2058,8 +2083,9 @@
void
rl_callback_handler_remove(void)
{
- el_set(e, EL_UNBUFFERED, 0);
rl_linefunc = NULL;
+ el_end(e);
+ e = NULL;
}
void
@@ -2369,3 +2395,9 @@
{
return 0;
}
+
+void
+rl_resize_terminal(void)
+{
+ el_resize(e);
+}
diff -r e2a42d92b946 -r 11717b0a0d68 lib/libedit/readline/readline.h
--- a/lib/libedit/readline/readline.h Fri Sep 01 07:29:56 2017 +0000
+++ b/lib/libedit/readline/readline.h Fri Sep 01 10:19:10 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: readline.h,v 1.41 2016/10/28 18:32:35 christos Exp $ */
+/* $NetBSD: readline.h,v 1.42 2017/09/01 10:19:10 christos Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
@@ -147,6 +147,7 @@
void using_history(void);
int add_history(const char *);
void clear_history(void);
+int append_history(int, const char *);
void stifle_history(int);
int unstifle_history(void);
int history_is_stifled(void);
@@ -182,6 +183,7 @@
int rl_insert(int, int);
int rl_insert_text(const char *);
void rl_reset_terminal(const char *);
+void rl_resize_terminal(void);
int rl_bind_key(int, rl_command_func_t *);
int rl_newline(int, int);
void rl_callback_read_char(void);
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