Project

General

Profile

Bug #1448

EmacsUI: sending line with "7" calls SourceRegion (!?!?!)

Added by Anna Maria Bigatti about 4 years ago. Updated almost 4 years ago.

Status:
Closed
Priority:
Normal
Assignee:
John Abbott
Category:
EmacsUI
Target version:
CoCoA-5.3.2
Start date:
17 Apr 2020
Due date:
% Done:

100%

Estimated time:
2.01 h
Spent time:
1.55 h

Description

This is the most amusing and surprising bug I've ever seen.
Evaluating C-<enter> (or C-c C-l) on the first line of this input gives error

points := [   [1234567890, 4],
       [2,6]];
--> ERROR: Found End-of-Input while looking for the start of an expression

after many tests looking for the killer phantom character, I realized it is "7" 
points := [   [123456890, 4],
       [2,6]];
-- OK -- no 7

use QQ[x,y,z];
F := [ x-9*y^7,  --<---- 7
      x^4];
--> ERROR: Found End-of-Input ...

Related issues

Related to CoCoA-5 - Bug #672: Emacs UI: strange string literal causes crashClosed2015-03-09

History

#1 Updated by Anna Maria Bigatti about 4 years ago 

points := [   [123456890, 4],
       [2,6]];
-- OK -- no 7

points := [   [4, 7],
       [2,6]];
--> ERROR: Found End-of-Input ...

points := [   [123456890, 4],
       [1,7],
       [2,6]];
--> ERROR: Found End-of-Input ...

use QQ[x,y,z];
F := [ x-9*y^7,
      x^4];
--> ERROR: Found End-of-Input ...

#2 Updated by Anna Maria Bigatti about 4 years ago

  • Subject changed from EmacsUI: sending line with "7" calls SourceRegion (!!!) to EmacsUI: sending line with "7" calls SourceRegion (!?!?!)

#3 Updated by Anna Maria Bigatti about 4 years ago

  • Description updated (diff)

#4 Updated by John Abbott about 4 years ago

It is important to read carefully the description of the bug...

I confirm the bug for me (Ubuntu 18.04, emacs 25.2.1).

Very odd!

#5 Updated by John Abbott about 4 years ago

I wonder if the problem is in the regexp on line 1423.... damn, I wrote that :-(

#6 Updated by John Abbott about 4 years ago

  • Assignee set to John Abbott
  • % Done changed from 10 to 50

I have modified the regexp in my local copy, and it works now.

BUT the file contains some weird chars now :-/
Now sure how to do it otherwise... I'll make a couple more attempts.

#7 Updated by John Abbott about 4 years ago

I think I have a reasonable solution; it may not behave exactly as before. It's tricky getting these regexps to do exactly what I want.

I have replaced the regexp by "[^[:alnum:][:space:][:punct:]]"

A couple of quick tests seemed to work OK.

Also #672 seems ok still.

#8 Updated by John Abbott about 4 years ago

  • Related to Bug #672: Emacs UI: strange string literal causes crash added

#9 Updated by John Abbott about 4 years ago

  • Status changed from In Progress to Feedback
  • % Done changed from 50 to 90

I have checked in (cocoa5.el)

How can we make a test suite for the emacs UI?

Please test, and let me know if it works.

#10 Updated by Anna Maria Bigatti about 4 years ago

  • Status changed from Feedback to Closed
  • % Done changed from 90 to 100
  • Estimated time set to 2.01 h

It works for me 

GNU Emacs 22.3.1 (i386-apple-darwin9.8.0, Carbon Version 1.6.0)
 of 2010-01-10 on gs674-seijiz.local

John Abbott wrote:

I have checked in (cocoa5.el)

How can we make a test suite for the emacs UI?

no idea. However there is a good team of testers!! ;-)

#11 Updated by Redmine Admin almost 4 years ago

  • Target version changed from CoCoA-5.4.0 to CoCoA-5.3.2

Also available in: Atom PDF