Why french accents are not represented correctly after Matlab2011b?

I am mantaining a piece of software developed on Matlab R2011b which uses several languages, french among them.

I am now compiling the code on Matlab R2022 and the non ASCII characters are represented either as or some other strange symbol.

However this does not happen when I run the code directly from the Matlab IDE, only running the executable.

Menu after compiling:

Menu when running the code from the IDE:

When I run feature('DefaultCharacterSet') on my command bar it says 'UTF-8', but I', not sure if that is relevant. I tried running some variations of this command, but it had no effect.

[Rik]

How is the text loaded to the menu? Where is the source text stored? If R2022a assumes a file is UTF-8, while it is actually ANSI, that could cause issues. This includes .m files.

[Bruno Luong]

@Rik the source file is not the problem since it works under IDE

[Rik]

I have gotten into the habit of specifying everything that is >127 and using a function like the one below to make sure my characters show up as expected. I haven't had any issues since, but your mileage may vary.

This code first checks the encoding of the char datatype (UTF-16 for Matlab, UTF-8 for Octave (for now)), and then dec2bin/bin2dec to do the encoding.

I minified the code (and removed unreachable warning text) to make it reasonably fit in a post like this.

function str=ch_r(dbl)
% This allows easy conversion from double to char, where you would normally use code like this:
%    msg = ['This is the euro symbol: ' ch_r(8364)];
% This function works for Matlab and GNU Octave.
str=ch_r_f03(dbl,~ch_r_f00);
end
function v000=ch_r_f00,persistent v001,if isempty(v001),if ch_r_f01('<',0,'Octave','>',0),v002=...
struct('w',warning('off','all'));[v002.msg,v002.ID]=lastwarn;v001=~isequal(8364,...
double(char(8364)));warning(v002.w);lastwarn(v002.msg,v002.ID);else,v001=false;end,end,v000=...
v001;end
function v000=ch_r_f01(v001,v002,v003,v004,v005),persistent v006 v007 v008,if isempty(v006),...
v008=exist('OCTAVE_VERSION','builtin');v006=[100,1] * sscanf(version,'%d.%d',2);v007={};end,if ...
v008,if nargin==2,warning('HJW:ifversion:NoOctaveTest','x'),if isnumeric(v002),v009=...
0.1*v002+0.9*fix(v002);v009=round(100*v009);else,v010=ismember(v007(:,1),v002);if sum(v010)~=1,...
warning('HJW:ifversion:NotInDict','x'),v000=NaN;return,else,v009=v007{v010,2};end,end,elseif ...
nargin==4,[v001,v009]=deal(v003,v004);v009=0.1*v009+0.9*fix(v009);v009=round(100*v009);else,...
[v001,v009]=deal(v004,v005);v009=0.1*v009+0.9*fix(v009);v009=round(100*v009);end,else,if ...
isnumeric(v002),v009=0.1*v002+0.9*fix(v002);v009=round(100*v009);else,v010=ismember(v007(:,1),...
v002);if sum(v010)~=1,warning('HJW:ifversion:NotInDict','x'),v000=NaN;return,else,v009=...
v007{v010,2};end,end,end,switch v001,case'==',v000=v006==v009;case'<',v000=v006 < v009;case'<=',...
v000=v006 <=v009;case'>',v000=v006 > v009;case'>=',v000=v006 >=v009;end,end
function v000=ch_r_f02(v001),if numel(v001)>1,error('x'),end,if v001<128,v000=v001;return,end,...
persistent v002,if isempty(v002),v002=struct;v002.limits.lower=hex2dec({'0000','0080','0800',...
'10000'});v002.limits.upper=hex2dec({'007F','07FF','FFFF','10FFFF'});v002.scheme{2}=...
'110xxxxx10xxxxxx';v002.scheme{2}=reshape(v002.scheme{2}.',8,2);v002.scheme{3}=...
'1110xxxx10xxxxxx10xxxxxx';v002.scheme{3}=reshape(v002.scheme{3}.',8,3);v002.scheme{4}=...
'11110xxx10xxxxxx10xxxxxx10xxxxxx';v002.scheme{4}=reshape(v002.scheme{4}.',8,4);for v003=2:4,...
v002.scheme_pos{v003}=find(v002.scheme{v003}=='x');v002.bits(v003)=numel(v002.scheme_pos{v003});
end,end,v004=find(v002.limits.lower<=v001&v001<=v002.limits.upper);v000=v002.scheme{v004};v005=...
v002.scheme_pos{v004};v003=dec2bin(double(v001),v002.bits(v004));v000(v005)=v003;v000=...
bin2dec(v000.').';end
function v000=ch_r_f03(v001,v002),persistent v003,if isempty(v003),v003=ch_r_f01('<',0,'Octave',...
'>',0);end,if nargin==1,v002=~ch_r_f00;end,if v002,if all(v001<65536),v000=uint16(v001);v000=...
reshape(v000,1,numel(v000));else,[v004,v005,v006]=unique(v001);v000=cell(1,numel(v001));for ...
v007=1:numel(v004),v008=ch_r_f04(v004(v007));v008=uint16(v008);v000(v006==v007)={v008};end,v000=...
cell2mat(v000);end,if~v003,v000=char(v000);end,else,if all(v001<128),v000=char(v001);v000=...
reshape(v000,1,numel(v000));else,[v004,v005,v006]=unique(v001);v000=cell(1,numel(v001));for ...
v007=1:numel(v004),v008=ch_r_f02(v004(v007));v008=uint8(v008);v000(v006==v007)={v008};end,v000=...
cell2mat(v000);v000=char(v000);end,end,end
function v000=ch_r_f04(v001),if v001<65536,v000=v001;return,end,v002=double(v001)-65536;v002=...
dec2bin(v002,20);v000=bin2dec(['110110' v002(1:10);'110111' v002(11:20)]).';end

Answer 1

[Marc Raventós Tato]

Thanks @Rik, it worked by changing the encoding of the .m file where the text was stored from ANSI to UTF-8!