TSynEdit compare 2 memo text (TSynDiffSyn?)

[dr4cul453xy]

Does anyone know how to compare 2 memo using SynEdit? I have tried (hard) to search on the net to get the sample code but yet have no luck. Also found TDiff by Angus Johnson (http://www.angusj.com/delphi/textdiff.html) and still studying the sample (I found it a bit hard to understand, especially implementing highlighting).

Thanks in advance for the help

[Martin_fr]

SynEdit does not actually have any code to compute diffs.

TSynDiffSyn is a highlighter, that can be used if you have the result of the linux "diff" command.

That is, if you put text like below in a SynEdit

Code: Diff  [Select][+][-]

1.   foo
2. + bar
3. - abc
4.   123
5.  

Then that text is highlighted.

So you need another component to compute the diff. (Sorry, I don't know of any)

[dr4cul453xy]

Hi Martin,

Thank you for your explanation, I will try to use TDiff then.

Regards,
Drx

[howardpc]

Mattias has written diff functionality for the Lazarus IDE accessed via Tools > Compare files... which shows the Compare Files (not for creating patches) dialog.
The source for the diff engine is in
  ../lazarus/ide/diffpatch.pas
and the source for the dialog is in
  ../lazarus/ide/diffdialog.pas