How to know who added/edited the lines which are right now deleted/moved in Perforce?

user_6907759 0
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For example, these lines are deleted from the class foobar.java

int foo = 1;
String bar = "two";

I can see that someone deleted these lines and that is around 1 year ago. But, now I wanted to know who originally added/edited these lines before. Right now, I am working on a file which is changed a lot in the last 2 years and I only know to go through the Perforce File History which is really tiresome and has a lot of history. I think it is really difficult to go through each changelist and determine who edited/added these lines. Does anyone know any tricks/tools inside perforce?

perforce
1 Answers

Use p4 annotate -a.

    p4 annotate [-aciIqtTu -d<flags>] file[revRange] ...

        Prints all lines of the specified files, indicating the revision that
        introduced each line into the file.

        ...

        The -a flag includes both deleted files and lines no longer present
        at the head revision. In the latter case, both the starting and ending
        revision for each line is displayed.

        ...

Without the -a flag, p4 annotate shows you the revision in which each line in the given file revision was added:

C:\Perforce\test>p4 annotate foobar.java
//stream/main/foobar.java#3 - edit change 311 (text)
1: this is a sample file
2:
3: now there's some other stuff in here

With the -a flag, all of the deleted lines are shown as well, and each line is displayed with a range that shows what revisions it was present in:

C:\Perforce\test>p4 annotate -a foobar.java
//stream/main/foobar.java#3 - edit change 311 (text)
1-3: this is a sample file
2-3:
2-2: int foo = 1;
2-2: String bar = "two";
3-3: now there's some other stuff in here

The 2-2 lines were added in revision #2, and then deleted in revision #3.

You can take the revision numbers and correlate them to the history in p4 filelog to see which user created each revision and in which changelist and when:

C:\Perforce\test>p4 filelog foobar.java
//stream/main/foobar.java
... #3 change 311 edit on 2022/08/25 by Samwise@Samwise-dvcs-1509687817 (text) 'another edit'
... #2 change 310 edit on 2022/08/25 by Samwise@Samwise-dvcs-1509687817 (text) 'edit foobar'
... #1 change 309 add on 2022/08/25 by Samwise@Samwise-dvcs-1509687817 (text) 'add foobar'

or you can pass additional flags to p4 annotate to put some of that information right in the annotate output:

C:\Perforce\test>p4 annotate -atu foobar.java
//stream/main/foobar.java#3 - edit change 311 (text)
1-3: Samwise 2022/08/25 this is a sample file
2-3: Samwise 2022/08/25
2-2: Samwise 2022/08/25 int foo = 1;
2-2: Samwise 2022/08/25 String bar = "two";
3-3: Samwise 2022/08/25 now there's some other stuff in here

In P4V, you can use the "Time-Lapse View" feature to see the same information.

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