Using "patch" from the GnuWin32 project on Windows 7

The command "patch" is a widely used Unix text processing utility. A version of patch for Windows is available as part of the GnuWin32 project. Unfortunately, the User Account Control (UAC) on Windows 7 causes some difficulties when trying to run patch.

There are two steps to work around this problem:

1. Modify the manifest that is embedded into patch.exe. The command-line tool "mt", which is included with Microsoft C++ Visual Studio, can be used to do this. First, create a plain text file, say patch.exe.manifest, with these contents:

   <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
   <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
   <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
   <security>
   <requestedPrivileges>
   <requestedExecutionLevel level="asInvoker" uiAccess="false"/>
   </requestedPrivileges>
   </security>
   </trustInfo>
   </assembly>
   

   Then, run a Visual Studio command prompt as administrator — bring up

    Start -> All Programs -> Microsoft Visual C++ 200x -> Visual Studio Tools
   

   and on "Visual Studio 200x Command Prompt" right-click and select "Run as administrator". Then cd to the patch.exe installation directory, which is probably

    C:\Program Files (x86)\GnuWin32\bin
   

   and run

    mt -manifest patch.exe.manifest -outputresource:patch.exe;1
   

2. Move patch.exe out from under C:\Program Files (x86). One option is to move the entire GnuWin32 tree to, say, C:\GnuWin32. Or, you can just copy the patch.exe file into, say, a directory under the user's home directory. If you do the latter, however, be sure that the copied patch.exe file is earlier in the user's PATH than the original patch.exe under C:\Program Files (x86).

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