[Octave-bug-tracker] [bug #42025] dlmread unable to recognize emptyvalues at start of line with whitespace separator

[Rik]

Follow-up Comment #7, bug #42025 (project octave):

We could get a check.  Philip apparently has access to 2014a.

The problem is that whitespace is supposed to be ignored at the start of
lines.  But what if the delimiter is whitespace itself?  There is some code to
partially work around this by setting an internal variable sepflag, but it is
all rather complicated.

In the imp3.txt file, one of the lines is


" 3 33"


When read with


dlmread ('imp3.txt', ' ')


I would think that the first space is treated as a delimiter which means the
output should be


0  3  33


Instead, Matlab eats the whitespace at the beginning of the line and returns


3  33


But the line above this in imp3.txt is


" 22"


In this case, Matlab doesn't eat the whitespace and actually returns


0  22


It is almost like you would need to parse any line beginning with a whitespace
delimiter twice in order to determine which way gave you the "best" outcome.


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