CLI: allow me to pass 2 strings to compare OR lineNumbers of the files to compare

[zissakos]

I want to compare line x and line y of the same text file and I didn't see Command Line Parameters to just pass a string for Left and Right. CLI only seems to support saved files?

Alternatively if we could pass LeftFileLineNr and RightFileLineNr and Winmerge would only compare these 2 lines, that would also be great!

[sdottaka]

WinMerge can compare the two most recent clipboard entries when clipboard history is enabled.
With PowerShell, you can copy line 123 from the first file and line 234 from the second file to the clipboard, then launch WinMerge to compare them as shown below.
You can also output these lines to temporary files instead.
Saving this as a batch file would make it easy to reuse.

(Get-Content 'E:\dev\winmerge\src\mainfrm.cpp')[122] | Set-Clipboard
(Get-Content 'D:\dev\winmerge\src\mainfrm.cpp')[233] | Set-Clipboard
& 'C:\Program Files\WinMerge\WinMergeU.exe' /clipboard-compare

[zissakos]

WOW This is awesome! Perfectly solves my problem. THANK YOU!

[sdottaka]

I forgot about the SelectLines plugin. You can achieve the same result by using it as follows:

"c:\Program Files\WinMerge\WinMergeU.exe" e:\dev\winmerge\src\MainFrm.cpp d:\dev\winmerge\src\MainFrm.cpp /unpacker "SelectLines:1 123|SelectLines:2 234"