[bug #64206] [mm] `INDP` macro produces blank page at end

[G. Branden Robinson]

Update of bug #64206 (project groff):

                Severity:              3 - Normal => 2 - Minor              
              Item Group:     Incorrect behaviour => Rendering/Cosmetics    
                  Status:                    None => Confirmed              
                 Summary: [mm] indexing system paginates badly => [mm] `INDP`
macro produces blank page at end

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Follow-up Comment #1:

Turns out that most of this is the same issue as bug #64207.  Rather than
closing as a duplicate, I'm drastically reducing its scope.

And happily, this also gives me more confidence in that change.


$ git checkout e65938aac
[...]
$ cat EXPERIMENTS/use-index.mm 
.INITI N myindex
.P
This is my document.
.IND "first item"
.IND "item, first"
.bp
.P
Here is some more stuff.
.IND "second item"
.IND "item, second"
This concludes our regularly scheduled programming.
.
Sed ut perspiciatis,
unde omnis iste natus error sit voluptatem accusantium doloremque
laudantium,
totam rem aperiam eaque ipsa,
quae ab illo inventore veritatis et quasi architecto beatae vitae dicta
sunt,
explicabo.
.INDP
$ ./build/test-groff -mm -Tascii EXPERIMENTS/use-index.mm | cat -s

                                   - 1 -

       This is my document.

                                   - 2 -

       Here  is  some  more  stuff.   This  concludes our regularly
       scheduled programming.  Sed ut perspiciatis, unde omnis iste
       natus   error   sit   voluptatem   accusantium    doloremque
       laudantium,  totam  rem  aperiam  eaque  ipsa,  quae ab illo
       inventore veritatis et quasi architecto beatae  vitae  dicta

                                   - 3 -

       sunt, explicabo.

                                   - 4 -

                                  INDEX

       first item      1
       item, first     1
       item, second    2
       second item     2

                                   - 5 -

$ git checkout 50ec7561d
Previous HEAD position was e65938aac [man]: Preserve user-selected font
family.
HEAD is now at 50ec7561d [mm]: Fix Savannah #64207.
$ ./build/test-groff -mm -Tascii EXPERIMENTS/use-index.mm | cat -s

                                   - 1 -

       This is my document.

                                   - 2 -

       Here  is  some  more  stuff.   This  concludes our regularly
       scheduled programming.  Sed ut perspiciatis, unde omnis iste
       natus   error   sit   voluptatem   accusantium    doloremque
       laudantium,  totam  rem  aperiam  eaque  ipsa,  quae ab illo
       inventore veritatis et quasi architecto beatae  vitae  dicta
       sunt, explicabo.

                                   - 3 -

                                  INDEX

       first item      1
       item, first     1
       item, second    2
       second item     2

                                   - 4 -

$ git show
[...]
diff --git a/contrib/mm/m.tmac b/contrib/mm/m.tmac
index c679a7089..0b2878c89 100644
--- a/contrib/mm/m.tmac
+++ b/contrib/mm/m.tmac
@@ -1297,6 +1297,7 @@ numeric; got '\\$1'
 .\" stop output and begin on next page. Fix footnotes and all that.
 .de pg@next-page
 .\".debug next-page
+.br
 .ne 999i               \" activate trap
 .\" .pg@footer
 ..


So now there is just the matter of the trailing blank page, which is either a
cosmetic or documentation issue.

(The commit IDs will likely not survive into the master branch.)


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  <https://savannah.gnu.org/bugs/?64206>

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