[squeak-dev] Strange Char code 160
Ron Teitelbaum
ron at usmedrec.com
Tue Sep 11 15:38:41 UTC 2018
Hi All,
I ran into this problem. Has anyone seen this before?
I was importing a file that contained some sort of char code 160.
http://www.adamkoch.com/2009/07/25/white-space-and-character-160/ says this
is a non-breaking space.
I pasted the character into Squeak. When trying to inspect it in squeak I
get illegal character.
Illegal character (char code 160 16r16rA0) ->
The 16r16r seems to be an error in the method and not a real number
xIllegal
"An illegal character was encountered"
self halt.
self notify: 'Illegal character (char code ' , hereChar charCode , *' 16r'*
, hereChar charCode hex , ')' at: mark
But if I inspect Character nbsp I get a character 160 that seems to work
fine.
Here is the stack. I added a halt in xIllegal.
'11 September 2018 11:30:40.486 am
VM: Win32 - Smalltalk
Image: Squeak4.1 [latest update: #9957]
Parser(Object)>>halt
Receiver: a Parser
Arguments and temporary variables:
Receiver''s instance variables:
source: a ReadWriteStream
mark: 22
hereChar: $
aheadChar: Character value: 30
token: nil
tokenType: #xIllegal
currentComment: nil
buffer: a WriteStream ''''
typeTable: #(#xIllegal #xIllegal #xIllegal #xIllegal #xIllegal #xIllegal
#xIllegal #xIllegal #xDelimiter #xDelimiter #xIllegal #xDelimiter
#xDelimiter #xIllegal #xIllegal #xIllega...etc...
here: nil
hereType: nil
hereMark: nil
hereEnd: nil
prevMark: nil
prevEnd: nil
encoder: {an EncoderForV3PlusClosures}
requestor: a SmalltalkEditor
parseNode: nil
failBlock: [closure] in
Parser>>parse:class:category:noPattern:context:notifying:ifFail:
requestorOffset: 0
tempsMark: nil
doitFlag: nil
properties: nil
category: nil
Parser(Scanner)>>xIllegal
Receiver: a Parser
Arguments and temporary variables:
Receiver''s instance variables:
source: a ReadWriteStream
mark: 22
hereChar: $
aheadChar: Character value: 30
token: nil
tokenType: #xIllegal
currentComment: nil
buffer: a WriteStream ''''
typeTable: #(#xIllegal #xIllegal #xIllegal #xIllegal #xIllegal #xIllegal
#xIllegal #xIllegal #xDelimiter #xDelimiter #xIllegal #xDelimiter
#xDelimiter #xIllegal #xIllegal #xIllega...etc...
here: nil
hereType: nil
hereMark: nil
hereEnd: nil
prevMark: nil
prevEnd: nil
encoder: {an EncoderForV3PlusClosures}
requestor: a SmalltalkEditor
parseNode: nil
failBlock: [closure] in
Parser>>parse:class:category:noPattern:context:notifying:ifFail:
requestorOffset: 0
tempsMark: nil
doitFlag: nil
properties: nil
category: nil
Parser(Scanner)>>scanToken
Receiver: a Parser
Arguments and temporary variables:
Receiver''s instance variables:
source: a ReadWriteStream
mark: 22
hereChar: $
aheadChar: Character value: 30
token: nil
tokenType: #xIllegal
currentComment: nil
buffer: a WriteStream ''''
typeTable: #(#xIllegal #xIllegal #xIllegal #xIllegal #xIllegal #xIllegal
#xIllegal #xIllegal #xDelimiter #xDelimiter #xIllegal #xDelimiter
#xDelimiter #xIllegal #xIllegal #xIllega...etc...
here: nil
hereType: nil
hereMark: nil
hereEnd: nil
prevMark: nil
prevEnd: nil
encoder: {an EncoderForV3PlusClosures}
requestor: a SmalltalkEditor
parseNode: nil
failBlock: [closure] in
Parser>>parse:class:category:noPattern:context:notifying:ifFail:
requestorOffset: 0
tempsMark: nil
doitFlag: nil
properties: nil
category: nil
Parser(Scanner)>>scan:
Receiver: a Parser
Arguments and temporary variables:
inputStream: a ReadWriteStream
Receiver''s instance variables:
source: a ReadWriteStream
mark: 22
hereChar: $
aheadChar: Character value: 30
token: nil
tokenType: #xIllegal
currentComment: nil
buffer: a WriteStream ''''
typeTable: #(#xIllegal #xIllegal #xIllegal #xIllegal #xIllegal #xIllegal
#xIllegal #xIllegal #xDelimiter #xDelimiter #xIllegal #xDelimiter
#xDelimiter #xIllegal #xIllegal #xIllega...etc...
here: nil
hereType: nil
hereMark: nil
hereEnd: nil
prevMark: nil
prevEnd: nil
encoder: {an EncoderForV3PlusClosures}
requestor: a SmalltalkEditor
parseNode: nil
failBlock: [closure] in
Parser>>parse:class:category:noPattern:context:notifying:ifFail:
requestorOffset: 0
tempsMark: nil
doitFlag: nil
properties: nil
category: nil
--- The full stack ---
Parser(Object)>>halt
Parser(Scanner)>>xIllegal
Parser(Scanner)>>scanToken
Parser(Scanner)>>scan:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Parser>>init:notifying:failBlock:
Parser>>parse:class:category:noPattern:context:notifying:ifFail:
Compiler>>translate:noPattern:ifFail:
Compiler>>evaluate:in:to:notifying:ifFail:logged:
[] in SmalltalkEditor(TextEditor)>>evaluateSelection
BlockClosure>>on:do:
SmalltalkEditor(TextEditor)>>evaluateSelection
[] in PluggableTextMorphPlus(PluggableTextMorph)>>inspectIt
...etc...
And to top it off if I inspect hereChar on xIllegal in the debugger I get a
char 160 that works fine!
I'm not sure how to determine what exactly what is the difference between
the two characters. Any suggestions?
Thanks!
All the best,
Ron Teitelbaum
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