[PATCH -perfbook] Use margins/indents for twocolumn as defined in book class

[Akira Yokosawa <akiyks@xxxxxxxxx>]

In perfbook.pdf, patches shown in Section 12.1.6.8 exceed the boxes
surrounding them.  Bisection points at commit 1063ddafb476 ("Get rid of
'twocolumn' option in \documentclass").

It turns out that there are a couple of indent and margin settings
the geometry package does not take care of.

Here is a list of such length parameters:

    - \parindent
    - \leftmargini
    - \leftmarginv
    - \leftmarginvi

Those length are set shorter for the twocolumn option in book.cls
and bk10.clo.

Restore the previous behavior by explicitly setting them for twocolumn
builds.

Fixes: 1063ddafb476 ("Get rid of 'twocolumn' option in \documentclass")
Signed-off-by: Akira Yokosawa <akiyks@xxxxxxxxx>
---
 perfbook-lt.tex | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/perfbook-lt.tex b/perfbook-lt.tex
index 9c89dd4254b8..3adf512effcb 100644
--- a/perfbook-lt.tex
+++ b/perfbook-lt.tex
@@ -478,6 +478,11 @@
     }{
       \usepackage[letterpaper,body={6.5in,8.25in},twocolumn,columnsep=0.25in]{geometry}
     }}
+  % Adjust indents/margins set in book.cls for twocolumn
+  \setlength{\parindent}{1em}
+  \setlength{\leftmargini}{2em}
+  \setlength{\leftmarginv}{.5em}
+  \setlength{\leftmarginvi}{.5em}
   \sloppy % prefer wide inter-word spaces to occasional horizontal overfulls
 }{ % One Column
   \IfEbookSize {

base-commit: c9250f8d67fe9cdbaf6c25c27a395df48116a041
-- 
2.25.1