[Octave-bug-tracker] [bug #52542] Weird behaviour of vertical concatenation with empty char array

[Rik]

Follow-up Comment #3, bug #52542 (project octave):

I can sort of see how the parser might get to what you are suggesting.  The
examples below are somewhat confirmatory of your hypothesis that the array
size is being set before the concatenation takes place.


## In this case, total size is 2 + 1 rows = 3
## empty char matrix is filled out with blanks so 3x1 array of spaces
double ([char(ones(2,0)); 'A'])
ans =

   65
   32
   32




## In this case, the row vector orientation takes precedence and a 1x4
## array is created, and then the first entry is replaced with 'A'
double ([char(ones(0,4)); 'A'])
ans =

   65   32   32   32




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