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* bug#31662: [PATCH] fix double counting bug in term.el
@ 2018-05-31  4:49 John Shahid
  2018-05-31 22:51 ` Noam Postavsky
  0 siblings, 1 reply; 6+ messages in thread
From: John Shahid @ 2018-05-31  4:49 UTC (permalink / raw)
  To: 31662

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Hi all,

Today I was trying to run fzf[1] in term when I ran into a weird issue
that will cause the term output to be clobbered with certain output. The
root cause seems to be a double counting in the column offset. This is
usually fine, unless `2*len(inserted text)' causes the point to be equal
to the window width. I fixed the issue and added a new test in the
attached patch

[1] https://github.com/junegunn/fzf


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From efeec7bb556084f7004a83faf679f724bb8a0fe8 Mon Sep 17 00:00:00 2001
From: John Shahid <jvshahid@gmail.com>
Date: Wed, 30 May 2018 23:55:16 -0400
Subject: [PATCH] * lisp/term.el (term-emulate-terminal): fix column double
 counting

---
 lisp/term.el            | 3 ++-
 test/lisp/term-tests.el | 7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/lisp/term.el b/lisp/term.el
index 19e68ddb49..67cebda1be 100644
--- a/lisp/term.el
+++ b/lisp/term.el
@@ -2904,7 +2904,8 @@ term-emulate-terminal
                   (when (not (or (eobp) term-insert-mode))
                     (let ((pos (point)))
                       (term-move-columns columns)
-                      (delete-region pos (point))))
+                      (delete-region pos (point))
+                      (term-move-columns (- columns))))
                   ;; In insert mode if the current line
                   ;; has become too long it needs to be
                   ;; chopped off.
diff --git a/test/lisp/term-tests.el b/test/lisp/term-tests.el
index 8aaa61a210..e27dd0354d 100644
--- a/test/lisp/term-tests.el
+++ b/test/lisp/term-tests.el
@@ -89,6 +89,13 @@ term-test-screen-from-input
                                               "\e[2;1Hc"
                                               "\e[1;2Hb"
                                               "\e[1;1Ha") "" t))))
+  (should (equal "abcde    j"
+                 (term-test-screen-from-input
+                  10 12 (concat "\e[mabcdefghij"
+                                "\e[H"  ;move back to point-min
+                                "\e[mabcde"
+                                "\e[m    j"))))
+
   ;; Relative positioning.
   (should (equal "ab\ncd"
                  (term-test-screen-from-input
-- 
2.17.0


^ permalink raw reply related	[flat|nested] 6+ messages in thread

* bug#31662: [PATCH] fix double counting bug in term.el
  2018-05-31  4:49 bug#31662: [PATCH] fix double counting bug in term.el John Shahid
@ 2018-05-31 22:51 ` Noam Postavsky
  2018-06-01  2:51   ` John Shahid
  0 siblings, 1 reply; 6+ messages in thread
From: Noam Postavsky @ 2018-05-31 22:51 UTC (permalink / raw)
  To: John Shahid; +Cc: 31662

John Shahid <jvshahid@gmail.com> writes:
>                    (when (not (or (eobp) term-insert-mode))
>                      (let ((pos (point)))
>                        (term-move-columns columns)
> -                      (delete-region pos (point))))
> +                      (delete-region pos (point))
> +                      (term-move-columns (- columns))))

I think it's a better idea to just reset term-current-column to nil,
like what happens in Emacs 26.

> +  (should (equal "abcde    j"
> +                 (term-test-screen-from-input
> +                  10 12 (concat "\e[mabcdefghij"
> +                                "\e[H"  ;move back to point-min
> +                                "\e[mabcde"
> +                                "\e[m    j"))))
> +

The "\e[m" is just to make the strings get processed separately, right?
You can pass a list of strings instead:

    (term-test-screen-from-input
     10 12 (list "abcdefghij"
                 "\e[H" ;move back to point-min
                 "abcde"
                 "    j"))





^ permalink raw reply	[flat|nested] 6+ messages in thread

* bug#31662: [PATCH] fix double counting bug in term.el
  2018-05-31 22:51 ` Noam Postavsky
@ 2018-06-01  2:51   ` John Shahid
  2018-06-02  2:24     ` Noam Postavsky
  0 siblings, 1 reply; 6+ messages in thread
From: John Shahid @ 2018-06-01  2:51 UTC (permalink / raw)
  To: Noam Postavsky; +Cc: 31662

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Thanks for the feedback. I fixed both issues in the attached patch.

Noam Postavsky <npostavs@gmail.com> writes:

> John Shahid <jvshahid@gmail.com> writes:
>>                    (when (not (or (eobp) term-insert-mode))
>>                      (let ((pos (point)))
>>                        (term-move-columns columns)
>> -                      (delete-region pos (point))))
>> +                      (delete-region pos (point))
>> +                      (term-move-columns (- columns))))
>
> I think it's a better idea to just reset term-current-column to nil,
> like what happens in Emacs 26.
>
>> +  (should (equal "abcde    j"
>> +                 (term-test-screen-from-input
>> +                  10 12 (concat "\e[mabcdefghij"
>> +                                "\e[H"  ;move back to point-min
>> +                                "\e[mabcde"
>> +                                "\e[m    j"))))
>> +
>
> The "\e[m" is just to make the strings get processed separately, right?
> You can pass a list of strings instead:
>
>     (term-test-screen-from-input
>      10 12 (list "abcdefghij"
>                  "\e[H" ;move back to point-min
>                  "abcde"
>                  "    j"))




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From c9a8ac75923f7b48bcf3285f2c3b6e3a6d9e75b2 Mon Sep 17 00:00:00 2001
From: John Shahid <jvshahid@gmail.com>
Date: Wed, 30 May 2018 23:55:16 -0400
Subject: [PATCH] * lisp/term.el (term-emulate-terminal): fix column double
 counting

---
 lisp/term.el            | 3 ++-
 test/lisp/term-tests.el | 7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/lisp/term.el b/lisp/term.el
index 19e68ddb49..715f39bbbf 100644
--- a/lisp/term.el
+++ b/lisp/term.el
@@ -2904,7 +2904,8 @@ term-emulate-terminal
                   (when (not (or (eobp) term-insert-mode))
                     (let ((pos (point)))
                       (term-move-columns columns)
-                      (delete-region pos (point))))
+                      (delete-region pos (point))
+                      (setq term-current-column nil)))
                   ;; In insert mode if the current line
                   ;; has become too long it needs to be
                   ;; chopped off.
diff --git a/test/lisp/term-tests.el b/test/lisp/term-tests.el
index 8aaa61a210..72a9ad1ef7 100644
--- a/test/lisp/term-tests.el
+++ b/test/lisp/term-tests.el
@@ -89,6 +89,13 @@ term-test-screen-from-input
                                               "\e[2;1Hc"
                                               "\e[1;2Hb"
                                               "\e[1;1Ha") "" t))))
+  (should (equal "abcde    j"
+                 (term-test-screen-from-input
+                  10 12 '("abcdefghij"
+                          "\e[H"  ;move back to point-min
+                          "abcde"
+                          "    j"))))
+
   ;; Relative positioning.
   (should (equal "ab\ncd"
                  (term-test-screen-from-input
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread

* bug#31662: [PATCH] fix double counting bug in term.el
  2018-06-01  2:51   ` John Shahid
@ 2018-06-02  2:24     ` Noam Postavsky
  2018-06-02  2:43       ` John Shahid
  0 siblings, 1 reply; 6+ messages in thread
From: Noam Postavsky @ 2018-06-02  2:24 UTC (permalink / raw)
  To: John Shahid; +Cc: 31662

John Shahid <jvshahid@gmail.com> writes:

> Thanks for the feedback. I fixed both issues in the attached patch.

Thanks, looks good.

> Subject: [PATCH] * lisp/term.el (term-emulate-terminal): fix column double
>  counting

Minor nitpick ChangeLog formatting nitpick, the sentence should be
capitalized and end with a period.

Have you assigned copyright for Emacs?  (the patch is small enough to go
in regardless, but it would need to be marked as a tiny change)





^ permalink raw reply	[flat|nested] 6+ messages in thread

* bug#31662: [PATCH] fix double counting bug in term.el
  2018-06-02  2:24     ` Noam Postavsky
@ 2018-06-02  2:43       ` John Shahid
  2018-06-02  3:13         ` Noam Postavsky
  0 siblings, 1 reply; 6+ messages in thread
From: John Shahid @ 2018-06-02  2:43 UTC (permalink / raw)
  To: Noam Postavsky; +Cc: 31662

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Noam Postavsky <npostavs@gmail.com> writes:

> John Shahid <jvshahid@gmail.com> writes:
>
>> Thanks for the feedback. I fixed both issues in the attached patch.
>
> Thanks, looks good.
>
>> Subject: [PATCH] * lisp/term.el (term-emulate-terminal): fix column double
>>  counting
>
> Minor nitpick ChangeLog formatting nitpick, the sentence should be
> capitalized and end with a period.

fixed in the attached patch

>
> Have you assigned copyright for Emacs?  (the patch is small enough to go
> in regardless, but it would need to be marked as a tiny change)

Yes I did. Should I attach the signed assignment to the bug report ?

cheers,

-js


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From 26219852992155889e142fb2b45f559ec6318c28 Mon Sep 17 00:00:00 2001
From: John Shahid <jvshahid@gmail.com>
Date: Wed, 30 May 2018 23:55:16 -0400
Subject: [PATCH] * lisp/term.el (term-emulate-terminal): Fix column double
 counting.

---
 lisp/term.el            | 3 ++-
 test/lisp/term-tests.el | 7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/lisp/term.el b/lisp/term.el
index 19e68ddb49..715f39bbbf 100644
--- a/lisp/term.el
+++ b/lisp/term.el
@@ -2904,7 +2904,8 @@ term-emulate-terminal
                   (when (not (or (eobp) term-insert-mode))
                     (let ((pos (point)))
                       (term-move-columns columns)
-                      (delete-region pos (point))))
+                      (delete-region pos (point))
+                      (setq term-current-column nil)))
                   ;; In insert mode if the current line
                   ;; has become too long it needs to be
                   ;; chopped off.
diff --git a/test/lisp/term-tests.el b/test/lisp/term-tests.el
index 8aaa61a210..72a9ad1ef7 100644
--- a/test/lisp/term-tests.el
+++ b/test/lisp/term-tests.el
@@ -89,6 +89,13 @@ term-test-screen-from-input
                                               "\e[2;1Hc"
                                               "\e[1;2Hb"
                                               "\e[1;1Ha") "" t))))
+  (should (equal "abcde    j"
+                 (term-test-screen-from-input
+                  10 12 '("abcdefghij"
+                          "\e[H"  ;move back to point-min
+                          "abcde"
+                          "    j"))))
+
   ;; Relative positioning.
   (should (equal "ab\ncd"
                  (term-test-screen-from-input
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 6+ messages in thread

* bug#31662: [PATCH] fix double counting bug in term.el
  2018-06-02  2:43       ` John Shahid
@ 2018-06-02  3:13         ` Noam Postavsky
  0 siblings, 0 replies; 6+ messages in thread
From: Noam Postavsky @ 2018-06-02  3:13 UTC (permalink / raw)
  To: John Shahid; +Cc: 31662

found 31662 27.0.50
tags 31662 fixed
close 31662 
quit

John Shahid <jvshahid@gmail.com> writes:

>> Minor nitpick ChangeLog formatting nitpick, the sentence should be
>> capitalized and end with a period.
>
> fixed in the attached patch

Thanks, pushed to master [1: 9ac76456eb].  (Actually, I noticed the
commit message had gotten too long, so I edited that a bit more first)

>> Have you assigned copyright for Emacs?  (the patch is small enough to go
>> in regardless, but it would need to be marked as a tiny change)
>
> Yes I did. Should I attach the signed assignment to the bug report ?

No need for that, I just take your word for it.  I'm sure Eli (who has
access to the official list) will step in if anybody lies about it, but
why would they? :)

[1: 9ac76456eb]: 2018-06-01 23:06:34 -0400
  Fix column double counting in term.el (Bug#31662)
  https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=9ac76456eb104f749aa9c60b99c68a649214efc6





^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2018-06-02  3:13 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2018-05-31  4:49 bug#31662: [PATCH] fix double counting bug in term.el John Shahid
2018-05-31 22:51 ` Noam Postavsky
2018-06-01  2:51   ` John Shahid
2018-06-02  2:24     ` Noam Postavsky
2018-06-02  2:43       ` John Shahid
2018-06-02  3:13         ` Noam Postavsky

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