Graphical diffing and merging tool. More information: <https://meldmerge.org/>.

• Start `meld`:
  meld
• Compare 2 files:
  meld path/to/file_1 path/to/file_2
• Compare 2 directories:
  meld path/to/directory_1 path/to/directory_2
• Compare 3 files:
  meld path/to/file_1 path/to/file_2 path/to/file_3
• Open a comparison as a new tab in a pre-existing meld instance:
  meld --newtab path/to/file_1 path/to/file_2
• Compare multiple sets of files:
  meld --diff path/to/file_1 path/to/file_2 --diff path/to/file_3 path/to/file_4

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