[Octave-bug-tracker] [bug #47539] textscan misinterprets escape sequences in single quoted strings

[Lars Kindermann]

Follow-up Comment #3, bug #47539 (project octave):

OK, the patch fixes the 'delimiter' 'n' problem for me.

But the problem with long files looks serious:
I attached a file 'textscantest.txt'
Running this script in current dev (4.0 works fine)


FID = fopen('textscantest.txt', 'r');
f = textscan(FID, '%s', 'delimiter', 'n');
fclose(FID);
f


produces this garbage for me


...
    [524,1] = 850;2014101321;   7;  38;  12.3;  99.0;eor
    [525,1] = 850;2014101322;   7;  38;  12.2; 
99.0;address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@
address@hidden@<C0><DE>address@hidden@address@hidden@address@hidden@address@hidden@^@<A0>"<A5>address@hidden@address@hidden@address@hidden;
X<<F4>address@hidden@<A8><DF>address@hidden@<C0><DF>+$~
address@hidden@0<E0>address@hidden@address@hidden@^@ 7;
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden;2014092307;
   7;  38;   8.;
 83.0;eor4092307;   7; 
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@@address@hidden@address@hidden@address@hidden@address@hidden@^@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@0<E0>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@
<A0>"<A5>address@hidden@address@hidden@address@hidden;
X<<F4>address@hidden@x<E0>address@hidden@<90><E0>address@hidden@<B0><E0>address@hidden@address@hidden@^@
 7;
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@850;2014092308;
   7;  38;  11.3;
 69.0;eor4092308;   7; 
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<B0><E0>address@hidden@address@hidden@address@hidden@address@hidden@<80>^S*$~^?^@
address@hidden@address@hidden@address@hidden@address@hidden@850;2014092309;   
7;  38;  13.7; 
57.0;address@hidden@^@@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<A0>"<address@hidden@address@hidden@address@hidden;
X<<F4>address@hidden@<88><E1>address@hidden@<A0><E1>address@hidden@^P<E2>address@hidden@address@hidden@^@
 7;
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@850;2014092215;
   7;  38;  14.1;
 52.0;eor4092215;   7; 
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^P<E2>address@hidden@address@hidden@address@hidden@address@hidden@<D0><E1>address@hidden@address@hidden@address@hidden@address@hidden@<A0>"<A5>address@hidden@address@hidden@address@hidden;
X<<F4>address@hidden@X<E2>address@hidden@p<E2>address@hidden@<E0><E2>address@hidden@address@hidden@^@
 7;
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden;2014092216;
   7;  38; 
13.7;  56.0;eor4092216;   7; 
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<E0><E2>address@hidden@address@hidden@address@hidden@address@hidden@<D0>
<E0>address@hidden@address@hidden@address@hidden@address@hidden@^@<A0>"<A5>address@hidden@address@hidden@address@hidden;
X<<F4>address@hidden@(<E3>address@hidden@@<E3>address@hidden@<B0><E3>address@hidden@address@hidden@^@
 7;
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden;2014092217;
   7;  38; 
13.5;  58.0;eo4092217;   7; 
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<B0><E3>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@<A0>"<A5>address@hidden@address@hidden@address@hidden;
X<<F4>address@hidden@<F8><E3>address@hidden@^P<E4>address@hidden@<80><E4>address@hidden@address@hidden@^@
 7;
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden;2014092218;
   7;  38;13.1; 
62.0;eor4092218;   7; 
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<80>
<E4>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<A0>"<A5>address@hidden@address@hidden@address@hidden;
X<<F4>address@hidden@<C8>
<E4>address@hidden@<90><9D>address@hidden@address@hidden@address@hidden@^@ 7;
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden;201092219;
   7;  38;  12.7;
 
66.0;address@hidden@<C0><D5>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@
address@hidden@address@hidden@address@hidden@^@<95>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<B0>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<A0><8D>,address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@p<E6>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden<address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@<FB><86><F5>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<9F><F6>address@hidden@address@hidden@&6
address@hidden@address@hidden@address@hidden<B5><F3>address@hidden@H<F2>address@hidden@<E0><F0>address@hidden@h<F2>address@hidden@address@hidden@address@hidden@address@hidden<B5<F3>address@hidden@(address@hidden@<B0><C4>address@hidden@(<CA>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@<A0>
<E6>address@hidden@<F0><F2>address@hidden@<D0><E7>address@hidden@&address@hidden@address@hidden@address@hidden@^@<F1>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@
address@hidden@^P<E6>address@hidden@^P<E6>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@H<E6>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@@<E6>+$~^?^^@@<E6>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@/home/kinder/usr/octave/scripts/address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@
address@hidden@address@hidden@^@<E0><E5>address@hidden@`<EE>address@hidden@`<ED>address@hidden@<80>",address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@
<E8><E6>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<F0><E9>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@P<E7>address@hidden@address@hidden@address@hidden@^@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@
address@hidden@address@hidden@/home/kinder/usr/octave/scripts/address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<F0><E9>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<E8>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden<C4>address@hidden@P<F1>address@hidden@<C0><E8>address@hidden@<A0><E8>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<C1>^@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden<E8>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@<F1>address@hidden@^P<address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@/home/kinder/usr/octave/scripts/address@hidden@^@@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^B^@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<80><A9>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<F8>^Q,address@hidden@address@hidden@address@hidden@address@hidden@
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^@<EB>address@hidden@
<E7>address@hidden@<D0><E7>address@hidden@<F0><EB>address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden<C3>address@hidden@p<C3>address@hidden<C0><8D>/address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@<A0><EB>address@hidden@<80>!,address@hidden@<F0><E9>address@hidden<EB>address@hidden@
      
address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@address@hidden@^`<ED>address@hidden@^P<C1>address@hidden@^@<EB>address@hidden@<D0><EB>address@hidden@
    [526,1] = eor
    [527,1] = 850;2014101323;   7;  38;  11.2;  99.0;eor
    [528,1] = 850;2014101400;   7;  38;  13.1;  97.0;eor
...


Also octave crashes during textscan within another large program with


panic: Speicherzugriffsfehler -- stopping myself...
attempting to save variables to 'octave-workspace'...
save to 'octave-workspace' complete
octave exited with signal 11


Speicherzugriffsfehler = Memory access error
Probably a pointer problem?


(file #36766)
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