From f70f68ac8fe5c1add78cf1b10910e72febbef6a9 Mon Sep 17 00:00:00 2001
From: Taylor R Campbell <campbell@mumble.net>
Date: Sat, 10 Aug 2019 15:18:49 +0000
Subject: [PATCH] Allow hyphenation of log-probability, log-logistic,
 ill-conditioned.

Can't find a good way to make TeX hyphenate a word that already has a
hyphen in it, so this'll have to do.
---
 doc/ref-manual/numbers.texi   | 16 ++++++++++------
 doc/ref-manual/scheme.texinfo | 10 ++++++++++
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/doc/ref-manual/numbers.texi b/doc/ref-manual/numbers.texi
index 750582c0d..ed0d6244d 100644
--- a/doc/ref-manual/numbers.texi
+++ b/doc/ref-manual/numbers.texi
@@ -1192,9 +1192,11 @@ one another.
 
 @itemize @bullet
 @item
-The log-logistic function maps log-odds on the extended real line to
-log-probability on the nonpositive half of the extended real line, and
-is ill-conditioned for large positive @var{x}:
+@cindex log-probability
+@cindex log-odds
+The log@hy{}logistic function maps log-odds on the extended real line
+to log@hy{}probability on the nonpositive half of the extended real
+line, and is ill@hy{}conditioned for large positive @var{x}:
 @iftex
 @tex
 \eqimage{fig/cn-loglogistic}
@@ -1212,9 +1214,11 @@ x f'(x)/f(x) = (-x exp(-x))/[(1 + exp(-x)) log(1 + exp(-x))]
 @end ifnottex
 
 @item
-The logit-exp function maps log-probability on the nonpositive half of
-the extended real line to log-odds on the extended real line, and is
-ill-conditioned near @math{\log(1/2)}:
+@cindex log-probability
+@cindex log-odds
+The logit@hy{}exp function maps log-probability on the nonpositive
+half of the extended real line to log-odds on the extended real line,
+and is ill@hy{}conditioned near @math{\log(1/2)}:
 @iftex
 @tex
 \eqimage{fig/cn-logitexp}
diff --git a/doc/ref-manual/scheme.texinfo b/doc/ref-manual/scheme.texinfo
index 361e85a9c..6357ae7c2 100644
--- a/doc/ref-manual/scheme.texinfo
+++ b/doc/ref-manual/scheme.texinfo
@@ -108,8 +108,18 @@ Documentation License.''
     \hfill%
   }%
 }
+
+% Explicit hyphen that doesn't block automatic hyphenation, in words
+% like `log-probability'.
+\gdef\hy{-\penalty0\hskip0pt\relax}
 @end tex
 
+@ifnottex
+@macro hy {n}
+\n\
+@end macro
+@end ifnottex
+
 @ifnottex
 @node Top, Acknowledgements, (dir), (dir)
 @top MIT/GNU Scheme
-- 
2.25.1