This section describes commands which compare files, windows and/or buffers against each other.
Arguments: source1
source2
Key sequence: None
Compares the text in the current window with the text of another window. The points are left where the text differs.
source1 defaults to the current window. source2 defaults to the next ordinary window.
Differences in whitespace are ignored by default, according to the value of compare-ignores-whitespace.
Arguments: buffer1
buffer2
Key sequence: None
Compares the text in the current buffer with that another buffer.
The first argument defaults to the current buffer. The second defaults to the next editor buffer.
Differences in whitespace are ignored by default, according to the value of compare-ignores-whitespace.
Arguments: None
Key sequence: None
The command Compare File And Buffer compares the text in the buffer with the text in the associated file, which is displayed in another window if the text differs. The points are left where the texts differ.
If the buffer is not associated with a file, editor:editor-error is called.
When true, the Compare Windows and Compare Buffers commands ignore mismatches due to differences in whitespace.
Arguments: file1
file2
Key sequence: None
Compares the current buffer with another file.
A prefix argument makes it compare any two files, prompting you for both filenames.
Arguments: file1
file2
Key sequence: None
Compares the current buffer with another file, like Diff but ignoring whitespace.
A prefix argument is interpreted in the same way as by Diff.
LispWorks Editor User Guide (Windows version) - 17 Aug 2017