Deleting a char inside a textField via code

[Paul Dupuis]

If you want to delete the last characters by script, why not something like:

delete last char of fld X

Or a more complex version might be

put the selectedChunk into tWhere
put word 2 of tWhere into tStart -- staring char position of the cursor
put word 4 of tWhere into tEnd -- ending char position of the cursor
if tStart > tEnd then -- just an insertion point
  delete char tEnd of field X -- delete the character just before the
insertion point
else -- some field content is selected, so
  delete char tStart to tEnd of fld X -- delete the selected field content
end if

I did this from memory, so check the dictionary for the exact
expressions returned by the selectedChunk function.,

On 8/31/2018 1:57 PM, Richmond Mathewson via use-livecode wrote:
> Digging further . . .
>
> I found out that the problem appearas:
>
> 1. NOT to be with LiveCode.
>
> 2. NOT to be with MacOS.
>
> Because using a font other than my one works well.
>
> So?
>
> What hidden aspects of my Devawriter.ttf font are gumming up the works?
>
> Richmond.
>
> On 31/8/2018 6:44 pm, Richmond Mathewson wrote:
>> Normally, if one were typing into a textField and made a mistake one
>> would hit the back delete key
>> and the mistake would vanish.
>>
>> How does one do this "programmatically"?
>>
>> Here's the (admittedly odd scenario):
>>
>> Unicode behaves inconsistently in various marginal cases with
>> Devanagari script,
>> and what happens is that the first time one sends this:
>>
>> put numToCodePoint(7418) after the selectedText
>>
>> one ends up with a useless square.
>>
>> But if one does this:
>>
>> put numToCodePoint(7418) after the selectedText
>> put numToCodePoint(7418) after the selectedText
>>
>> one ends up with the useless square PRECEDED by the target glyph.
>>
>> So, the 'clever' work around might be to do this:
>>
>> put numToCodePoint(7418) after the selectedText
>> put numToCodePoint(7418) after the selectedText
>>
>> followed by deleting the useless square
>>
>> However doing this:
>>
>> put numToCodePoint(65288) after the selectedText
>>
>> results in another useless square.
>>
>> Richmond.
>
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