[Lazarus] Unable to display symbols

[Mark Morgan Lloyd]

Flávio Etrusco wrote:
> On Sat, Mar 8, 2014 at 9:30 PM, Giuliano Colla
> <giuliano.colla at fastwebnet.it> wrote:

>> I was aware of that. My problem is that the char I must add to the Utf8
>> string is calculated run time, and is in the range Unicode $A0-$BF.
>>
>> I had assumed (wrongly) that the compiler was smart enough to convert a type
>> "char" to UTF8, when concatenating it to an UTf8 string. Instead it turns
>> out that the character is appended as it is, which leads to an invalid UTF8
>> character (above 127), which displays as a crossed box.
>> IMHO that's an FPC bug.

> Are you aware of $CODEPAGE directive? And that Lazarus, unless told
> otherwise, saves the source files in UTF-8 and tells FPC they are
> encoded in UTF-8?

There was specific discussion about conversions relating to characters 
in the range 0x80 through 0xff a few months ago. For parsing things like 
APL and ALGOL character sets I specifically use UTF-16 internally, and 
only convert to/from an 8-bit OEM codepage and/or UTF-8 at the margins 
of the program.

See discussion in http://mantis.freepascal.org/view.php?id=21195 and 
note change in the 2.7.1 compiler around revision 23613.

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]