What happens in Inno Setup when you list the same file twice? -


what happens when setup inno setup .iss file install same file same location twice? inno setup realize doing, , include , install file once, or collect file install multiple times, , overwrite each instance?

inno setup smart enough identify identical source file , include once installer. there's legitimate reason having duplicate source files; may want install same file different locations on target system.

what inno setup won't identify identical target location (i cannot think of legitimate reason having identical target location). install file twice. installs twice identical location, second installation not happen (with executable files default flags, version match) or barely noticeable (as overwrite identical data file).

[files] source: "myprog.exe"; destdir: "{app}" source: "myprog.exe"; destdir: "{app}" source: "requirements.txt"; destdir: "{app}" source: "requirements.txt"; destdir: "{app}" 
2015-04-01 17:33:06.529   -- file entry -- 2015-04-01 17:33:06.529   dest filename: c:\program files (x86)\my program\myprog.exe 2015-04-01 17:33:06.529   time stamp of our file: 2013-08-27 02:00:00.000 2015-04-01 17:33:06.529   installing file. 2015-04-01 17:33:06.542   installed file. 2015-04-01 17:33:06.543   -- file entry -- 2015-04-01 17:33:06.543   dest filename: c:\program files (x86)\my program\myprog.exe 2015-04-01 17:33:06.543   time stamp of our file: 2013-08-27 02:00:00.000 2015-04-01 17:33:06.543   dest file exists. 2015-04-01 17:33:06.543   time stamp of existing file: 2013-08-27 02:00:00.000 2015-04-01 17:33:06.543   version of our file: 1.5.0.0 2015-04-01 17:33:06.545   version of existing file: 1.5.0.0 2015-04-01 17:33:06.545   same version. skipping. 2015-04-01 17:33:06.545   -- file entry -- 2015-04-01 17:33:06.545   dest filename: c:\program files (x86)\my program\requirements.txt 2015-04-01 17:33:06.546   time stamp of our file: 2015-04-01 17:29:10.000 2015-04-01 17:33:06.546   installing file. 2015-04-01 17:33:06.547   installed file. 2015-04-01 17:33:06.547   -- file entry -- 2015-04-01 17:33:06.547   dest filename: c:\program files (x86)\my program\requirements.txt 2015-04-01 17:33:06.548   time stamp of our file: 2015-04-01 17:29:10.000 2015-04-01 17:33:06.548   dest file exists. 2015-04-01 17:33:06.548   time stamp of existing file: 2015-04-01 17:29:10.000 2015-04-01 17:33:06.548   version of our file: (none) 2015-04-01 17:33:06.549   version of existing file: (none) 2015-04-01 17:33:06.549   installing file. 2015-04-01 17:33:06.550   installed file.

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