[Octave-bug-tracker] [bug #53277] textscan(...) does not parse sequence of integers separated by dots (.)

[Matthias Brennwald]

URL:
  <http://savannah.gnu.org/bugs/?53277>

                 Summary: textscan(...) does not parse sequence of integers
separated by dots (.)
                 Project: GNU Octave
            Submitted by: mbrennwa
            Submitted on: Sat 03 Mar 2018 05:58:45 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.2.1
        Operating System: Any

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Details:

I am trying to read data from a file with dates in DAY.MONTH.YEAR format using
the textscan(...) function. Below is a simple illustration of the problem.

This does not work as desired:

    u = textscan ('5.2.1975','%d.%d.%d')
    u = 
    {
      [1,1] = 5
      [1,2] = 1975
      [1,3] = 0
    }

It seems textscan treats the 5.2 part as a decimal number and rounds it to 5.
It returns the last number (1975) as the second element of u.

The conversion works as expected if the separator is not a dot:

    u = textscan ('5*2*1975','%d*%d*%d')
    u = 
    {
      [1,1] = 5
      [1,2] = 2
      [1,3] = 1975
    }

I have asked about this on stackexchange. The feedback was that my dot example
works as expected on Octave 4.0.3. See here:
https://stackoverflow.com/questions/49075425/gnu-octave-use-textscan-function-to-read-sequence-of-integers-separated-by-a




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