calc.texi (TeX and LaTeX Language Modes, Predefined Units):

calc-units.el (math-build-units-table-buffer):
README: Mention that the TeX specific units won't use the `tex' prefix
in TeX mode.

calc-lang.el (math-variable-table): Don't use the `tex' prefix for
units in TeX mode.

2 files changed, 18 insertions, 0 deletions

diff --git a/doc/misc/ChangeLog b/doc/misc/ChangeLog
index f9e55ffb5ee..d57df81befc 100644
--- a/doc/misc/ChangeLog
+++ b/doc/misc/ChangeLog
@@ -1,3 +1,9 @@
+2010-11-19  Jay Belanger  <jay.p.belanger@gmail.com>
+
+        * calc.texi (TeX and LaTeX Language Modes, Predefined Units):
+        Mention that the TeX specific units won't use the `tex' prefix
+        in TeX mode.
+
 2010-11-18  Katsumi Yamaoka  <yamaoka@jpl.org>
 
         * gnus.texi (Misc Article): Document gnus-inhibit-images.
diff --git a/doc/misc/calc.texi b/doc/misc/calc.texi
index 9c30556ab78..58de84b8194 100644
--- a/doc/misc/calc.texi
+++ b/doc/misc/calc.texi
@@ -14122,6 +14122,10 @@ but
 @texline @math{\sin(2 + x)}.
 @infoline @expr{sin(2 + x)}.
 
+The @TeX{} specific unit names (@pxref{Predefined Units}) will not use
+the @samp{tex} prefix;  the unit name for a @TeX{} point will be
+@samp{pt} instead of @samp{texpt}, for example.
+
 Function and variable names not treated specially by @TeX{} and La@TeX{}
 are simply written out as-is, which will cause them to come out in
 italic letters in the printed document.  If you invoke @kbd{d T} or
@@ -27990,6 +27994,14 @@ than the point used by @TeX{}), @code{texdd} (a Didot point),
 @code{texcc} (a Cicero) and @code{texsp} (a scaled @TeX{} point, 
 all dimensions representable in @TeX{} are multiples of this value).
 
+When Calc is using the @TeX{} or La@TeX{} language mode (@pxref{TeX
+and LaTeX Language Modes}), the @TeX{} specific unit names will not
+use the @samp{tex} prefix; the unit name for a @TeX{} point will be
+@samp{pt} instead of @samp{texpt}, for example.  To avoid conflicts,
+the unit names for pint and parsec will simply be @samp{pint} and
+@samp{parsec} instead of @samp{pt} and @samp{pc}.
+
+
 The unit @code{e} stands for the elementary (electron) unit of charge;
 because algebra command could mistake this for the special constant
 @expr{e}, Calc provides the alternate unit name @code{ech} which is