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% Copyright (C) 2024 Eric Ludlam (and others)
% This program is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
% You should have received a copy of the GNU General Public License
% along with this program. If not, see <http://www.gnu.org/licenses/>.
function emacsrunregion(file, startchar, endchar)
% Run code from FILE between STARTCHAR and ENDCHAR.
% Command sent by Emacs for run code sections and run-region functionality.
% Filter out emacs tramp file path prefix
trampMatch = regexp(file, {'/*:',':/'});
if (~isempty(trampMatch{1}))
file = file((trampMatch{2}+1):end);
end
if ~exist(file,'file')
error('You must save your region into a file accessible by MATLAB process.');
end
% Now figure out if shortFileName is on the path.
[ fullFilePath, shortFileName ] = fileparts(file);
onpath = ~isempty(which(shortFileName));
% If not on the path, temporarily switch to that directory so it and an files it references are
% accessible
if ~onpath
oldpath = pwd;
cd(fullFilePath);
cleanup = onCleanup(@()cd(oldpath));
end
txt = fileread(file);
evalTxt = txt(startchar:min(endchar,length(txt)));
evalin('base',evalTxt);
end
% LocalWords: Ludlam STARTCHAR ENDCHAR
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