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bug#31662: [PATCH] fix double counting bug in term.el


From: John Shahid
Subject: bug#31662: [PATCH] fix double counting bug in term.el
Date: Sat, 02 Jun 2018 02:43:23 +0000
User-agent: mu4e 1.1.0; emacs 27.0.50

Noam Postavsky <address@hidden> writes:

> John Shahid <address@hidden> 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

>From 26219852992155889e142fb2b45f559ec6318c28 Mon Sep 17 00:00:00 2001
From: John Shahid <address@hidden>
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


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