I'm getting different results with respect to Abort when performed in a reference documentation notebook vs a new notebook. I am pretty confident it's to do with the newlines I introduced in my new notebook, because it all works fine when I collapse it back onto one line.
In[12]:= ClearAll[a]; ClearAll[b];
In[13]:= Print[a];
Abort[];
Print[b]
During evaluation of In[13]:= a
Out[14]= $Aborted
During evaluation of In[13]:= hi
But in the documentation window for "tutorial/InterruptsAndAborts", the first evaluable cell:
In[3]:= Print[a]; Abort[]; Print[b]
During evaluation of In[3]:= a
Out[3]= $Aborted
I've checked Hold[<that>] // FullForm // CopyToClipboard and they are not identical, though they do display identically: in my notebook, it's a TagBox monstrosity:
\!\(
TagBox[
StyleBox[
RowBox[{"Hold", "[",
RowBox[{"CompoundExpression", "[",
RowBox[{
RowBox[{"Print", "[", "a", "]"}], ",",
RowBox[{"Abort", "[", "]"}], ",",
RowBox[{"Print", "[", "b", "]"}]}], "]"}], "]"}],
ShowSpecialCharacters->False,
ShowStringCharacters->True,
NumberMarks->True],
FullForm]\)
Whereas in the documentation window it's precisely:
Hold[Print[a]; Abort[]; Print[b]]
Question: why are newlines causing different behaviour with respect to Abort here? I am strongly inclined to call this a bug, because the FullForm of the expression with newlines displays identically to the FullForm of the expression without newlines; it's only when you attempt to copy the held output (e.g. with CopyToClipboard) that you discover they're different.
My version:
In[12]:= $Version
Out[12]= "12.0.0 for Mac OS X x86 (64-bit) (April 7, 2019)"
(This odd behaviour discovered while trying to answer Stop a script. Just stop it .)
