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Instead of shifting all of the following lines down and marking the rest of the file as changed, WinMerge is smart enough to detect the changed lines and show that only that section has changed. In our example below, there is a section missing from the right-hand config2.txt file. These are easy to see because of the minimap shown on the left-hand side. Once the files are loaded, you will see that there are yellow sections that highlight the differences between the files. Once your files are entered, select Compare. Although WinMerge recently introduced a 3-way file compare, we are only going to look at a two-way compare here. As you can see from the screenshot below, I am choosing a file to show on the left-hand side and a second file to compare the first two on the right-hand side. It is here that you can open up two files to compare the differences. Once you open up WinMerge, you will be presented with the ability to open two files or folders, a left and right side.
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It is here where WinMerge excels in understanding the differences and merging changes as appropriate.
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Especially true for IT professionals, as working with configuration files can lead to issues if making the wrong change. There are many times that understanding the differences between a set of files or folders is critical to making sure that just the right operations are done. WinMerge is an exceptionally useful and open source differencing and merging tool for Windows.
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