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I use Examdiff for editing CNC programs for an 11 axis two channel machine, using the ignore string \w+\b(?<!M5\d\d) that I got from working with the wizards on this forum. This causes the wait commands to be lined up. (These commands have the very important purpose of preventing disasters totaling ...

I was wondering if there is a setting in ExamDiff that will allow me to save files in ExamDiff while they are open by other processes. Some programs allow this, notable the text editor UltraEdit. (My reasons for wanting to use Examdiff Pro as a text editor are detailed in another thread I started ...

The result was the same, but I am going to leave well enough alone.
-plh

I changed it to \w+\b(?<!M5\d\d) and it works like a charm -- Thank You! (In fact it also seemed to work the original way, but this one captures my intent.) Is there a reference I can look at somewhere? Some of those symbols are not in Help under Regular Expressions . I am always happier if I ...

I looks like I misread your post. "Ignore all lines except" is just what you said.
Can you help me out with the regex?
Thank You,
-plh

What I would have to do is ignore all lines except those that have "M5" followed by two digits. Is that possible?
I just noticed to my horror that the manual links are not preserved in the session file. Is there a way to preserve them? They are the most critical thing for me.
Thank You,
-plh

Thank you. IIUYC, you mean that the negative look behind is for the line with the comment: "G151G54(WORK OFFSET)". What about the lines that just have "G80" on them? I don't see why they were not ignored along with lines like "M1" and "G28U0".
Thank You,
-plh

Incorrect files in ZIP file. Here is the right one.
-plh

I manually linked all the lines that followed the rule I mentioned in earlier posts, because the double-headed arrow makes for a nice visual cue. Having done that, is there a way to make it ignore everything, leaving only the manually linked lines? I tried putting [:alnum:] in the text comparison ...

I was just trying that and the problem is that when I edit the file in another window, say UltraEdit, then return to ExamDiff, if I have added lines to one side no the link(s) on that side are in the wrong place, that is, they do not move with the added line(s). To maintain them I would have to do ...

The rule would apply throughout. Lines that begin with the letter M followed by an integer between 500 and 599 would match.
The next match should have been with the line M506. This occurs at line 120 in each column. They would line up from side to side.
It turns out that lines 163 and 169, having ...

I am not trying to ignore anything. I tried various options but none did the trick.
I am trying to place the lines that follow the rule at a greater priority than others. A kind of uber match.
If this is not possible, another way of doing it would be to ignore everything except lines beginning with ...

I would like to compel ExamDiff to align certain lines according to a rule. That is, if a pair of lines, one in one file, the other in another file, satisfied the rule, ExamDiff would make them line up on two sides of the screen, whatever else it did. The rule would be as follows: Lines starting ...