diff -up R-2.15.2/configure.makeinfo-fix R-2.15.2/configure
--- R-2.15.2/configure.makeinfo-fix	2012-10-18 18:05:56.000000000 -0400
+++ R-2.15.2/configure	2013-02-28 10:41:14.644967025 -0500
@@ -5196,6 +5196,8 @@ makeinfo_version_min=`echo ${makeinfo_ve
 if test -z "${makeinfo_version_maj}" \
      || test -z "${makeinfo_version_min}"; then
   r_cv_prog_makeinfo_v4=no
+elif test ${makeinfo_version_maj} -ge 5; then
+  r_cv_prog_makeinfo_v4=yes
 elif test ${makeinfo_version_maj} -lt 4 \
      || test ${makeinfo_version_min} -lt 7; then
   r_cv_prog_makeinfo_v4=no
diff -up R-2.15.2/m4/R.m4.makeinfo-fix R-2.15.2/m4/R.m4
--- R-2.15.2/m4/R.m4.makeinfo-fix	2012-10-13 18:05:05.000000000 -0400
+++ R-2.15.2/m4/R.m4	2013-02-28 10:39:53.083965801 -0500
@@ -210,6 +210,8 @@ makeinfo_version_min=`echo ${makeinfo_ve
 if test -z "${makeinfo_version_maj}" \
      || test -z "${makeinfo_version_min}"; then
   r_cv_prog_makeinfo_v4=no
+elif test ${makeinfo_version_maj} -ge 5; then
+  r_cv_prog_makeinfo_v4=yes
 elif test ${makeinfo_version_maj} -lt 4 \
      || test ${makeinfo_version_min} -lt 7; then
   r_cv_prog_makeinfo_v4=no
diff -up R-2.15.2/doc/manual/R-defs.texi.fixeqn R-2.15.2/doc/manual/R-defs.texi
--- R-2.15.2/doc/manual/R-defs.texi.fixeqn	2013-02-28 13:33:51.858006222 -0500
+++ R-2.15.2/doc/manual/R-defs.texi	2013-02-28 13:34:03.042006581 -0500
@@ -17,16 +17,18 @@ S
 @acronym{HTML}
 @end macro
 
-@macro eqn {t, a}
 @iftex
+@macro eqn {t, a}
 @tex
 $\t\$%
 @end tex
+@end macro
 @end iftex
 @ifnottex
+@macro eqn {t, a}
 \a\@c
-@end ifnottex
 @end macro
+@end ifnottex
 
 @macro pkg {p}
 @strong{\p\}
diff -up R-2.15.2/doc/manual/R-intro.texi.fixeqn R-2.15.2/doc/manual/R-intro.texi
--- R-2.15.2/doc/manual/R-intro.texi.fixeqn	2013-02-28 13:35:57.380030603 -0500
+++ R-2.15.2/doc/manual/R-intro.texi	2013-02-28 13:40:16.093042240 -0500
@@ -2045,13 +2045,17 @@ is the matrix product.  If @code{x} is a
 
 @noindent
 is a quadratic form.@footnote{Note that @code{x %*% x} is ambiguous, as
-it could mean either @xTx{} or @xxT{}, where @eqn{@strong{x},x} is the
-column form.  In such cases the smaller matrix seems implicitly to be
-the interpretation adopted, so the scalar @xTx{} is in this case the
-result.  The matrix @xxT{} may be calculated either by @code{cbind(x)
-%*% x} or @code{x %*% rbind(x)} since the result of @code{rbind()} or
+it could mean either @xTx{} 
+ or @xxT{}, 
+ where @eqn{@strong{x},x} 
+ is the column form.  In such cases the smaller matrix seems implicitly to be
+the interpretation adopted, so the scalar @xTx{} 
+ is in this case the result.  The matrix @xxT{} 
+ may be calculated either by @code{cbind(x)%*% x} or @code{x %*% rbind(x)} since the result of @code{rbind()} or
 @code{cbind()} is always a matrix.  However, the best way to compute
-@xTx{} or @xxT{} is @code{crossprod(x)} or @code{x %o% x}
+@xTx{} 
+ or @xxT{} 
+ is @code{crossprod(x)} or @code{x %o% x}
 respectively.}
 
 @findex crossprod
@@ -2107,12 +2111,16 @@ but rarely is needed.  Numerically, it i
 potentially unstable to compute @code{x <- solve(A) %*% b} instead of
 @code{solve(A,b)}.
 
-The quadratic form @eqn{@strong{x^T  A^{-1} x},@ @code{x %*% A^@{-1@} %*%
-x} @ } which is used in multivariate computations, should be computed by
+The quadratic form @eqn{@strong{x^T  A^{-1} x},@ @code{x %*% A^@{-1@} %*%x} @ } 
+, which is used in multivariate computations, should be computed by
 something like@footnote{Even better would be to form a matrix square
-root @eqn{B, B} with @eqn{A = BB^T, A = BB'} and find the squared length of the
-solution of @eqn{By = x, By = x}, perhaps using the Cholesky or
-eigendecomposition of @eqn{A, A}.} @code{x %*% solve(A,x)}, rather than
+root @eqn{B, B} 
+ with @eqn{A = BB^T, A = BB'} 
+ and find the squared length of the
+solution of @eqn{By = x, By = x}, 
+perhaps using the Cholesky or
+eigendecomposition of @eqn{A, A}.
+} @code{x %*% solve(A,x)}, rather than
 computing the inverse of @code{A}.
 
 @node Eigenvalues and eigenvectors, Singular value decomposition and determinants, Linear equations and inversion, Matrix facilities
@@ -6549,8 +6557,7 @@ disappear.
 @c need to adapt the discussion slightly.
 
 @table @code
-@item
-Start @R{} appropriately for your platform (@pxref{Invoking R}).
+@item Start @R{} appropriately for your platform (@pxref{Invoking R}).
 
 The @R{} program begins, with a banner.
 
@@ -6753,15 +6760,13 @@ parts @dots{}
 
 @item plot(w, xlim=c(-1,1), ylim=c(-1,1), pch="+",xlab="x", ylab="y")
 @itemx lines(z)
-@itemx
-All points are inside the unit circle, but the distribution is not
+@itemx All points are inside the unit circle, but the distribution is not
 uniform.
 
 @item w <- sqrt(runif(100))*exp(2*pi*runif(100)*1i)
 @itemx plot(w, xlim=c(-1,1), ylim=c(-1,1), pch="+", xlab="x", ylab="y")
 @itemx lines(z)
-@itemx
-The second method uses the uniform distribution.  The points should now
+@itemx The second method uses the uniform distribution.  The points should now
 look more evenly spaced over the disc.
 
 @item rm(th, w, z)
@@ -7066,7 +7071,7 @@ Post-process @R{} profiling files.
 Convert Rd format to various other formats, including @HTML{}, @LaTeX{},
 plain text, and extracting the examples.  @code{Rd2txt} can be used as
 shorthand for @code{Rd2conv -t txt}.
-@itemx Rd2pdf
+@item Rd2pdf
 Convert Rd format to PDF.
 @item Stangle
 Extract S/R code from Sweave documentation
diff -up R-2.15.2/doc/manual/R-lang.texi.fixeqn R-2.15.2/doc/manual/R-lang.texi
--- R-2.15.2/doc/manual/R-lang.texi.fixeqn	2013-02-28 13:41:17.454055194 -0500
+++ R-2.15.2/doc/manual/R-lang.texi	2013-02-28 13:43:05.114064174 -0500
@@ -3795,13 +3795,20 @@ Information from the operating system
 environment can be accessed and manipulated with
 @quotation
 @multitable @columnfractions 0.3 0.7
-@item @code{Sys.getenv} @tab OS environment variables @findex Sys.getenv
-@item @code{Sys.putenv}                               @findex Sys.putenv
-@item @code{Sys.getlocale} @tab System locale         @findex Sys.getlocale
-@item @code{Sys.putlocale}                            @findex Sys.putlocale
-@item @code{Sys.localeconv}                           @findex Sys.localeconv
-@item @code{Sys.time} @tab Current time               @findex Sys.time
-@item @code{Sys.timezone} @tab Time zone              @findex Sys.timezone
+@item @code{Sys.getenv} @tab OS environment variables 
+@findex Sys.getenv
+@item @code{Sys.putenv}                               
+@findex Sys.putenv
+@item @code{Sys.getlocale} @tab System locale         
+@findex Sys.getlocale
+@item @code{Sys.putlocale}                            
+@findex Sys.putlocale
+@item @code{Sys.localeconv}                           
+@findex Sys.localeconv
+@item @code{Sys.time} @tab Current time               
+@findex Sys.time
+@item @code{Sys.timezone} @tab Time zone              
+@findex Sys.timezone
 @end multitable
 @end quotation
 
@@ -3809,17 +3816,28 @@ environment can be accessed and manipula
 A uniform set of file access functions is provided on all platforms:
 @quotation
 @multitable @columnfractions 0.3 0.7
-@item @code{file.access} @tab Ascertain File Accessibility @findex file.access
-@item @code{file.append} @tab Concatenate files            @findex file.append
-@item @code{file.choose} @tab Prompt user for file name    @findex file.choose
-@item @code{file.copy}  @tab Copy files                    @findex file.copy
-@item @code{file.create} @tab Create or truncate a files   @findex file.create
-@item @code{file.exists} @tab Test for existence           @findex file.exists
-@item @code{file.info} @tab Miscellaneous file information @findex file.info
-@item @code{file.remove} @tab remove files                 @findex file.remove
-@item @code{file.rename} @tab rename files                 @findex file.rename
-@item @code{file.show} @tab Display a text file            @findex file.show
-@item @code{unlink} @tab Remove files or directories.      @findex unlink
+@item @code{file.access} @tab Ascertain File Accessibility 
+@findex file.access
+@item @code{file.append} @tab Concatenate files            
+@findex file.append
+@item @code{file.choose} @tab Prompt user for file name    
+@findex file.choose
+@item @code{file.copy}  @tab Copy files                    
+@findex file.copy
+@item @code{file.create} @tab Create or truncate a files   
+@findex file.create
+@item @code{file.exists} @tab Test for existence           
+@findex file.exists
+@item @code{file.info} @tab Miscellaneous file information 
+@findex file.info
+@item @code{file.remove} @tab remove files                 
+@findex file.remove
+@item @code{file.rename} @tab rename files                 
+@findex file.rename
+@item @code{file.show} @tab Display a text file            
+@findex file.show
+@item @code{unlink} @tab Remove files or directories.      
+@findex unlink
 @end multitable
 @end quotation
 
@@ -3827,10 +3845,14 @@ There are also functions for manipulatin
 platform-independent way.
 @quotation
 @multitable @columnfractions 0.3 0.7
-@item @code{basename} @tab File name without directory     @findex basename
-@item @code{dirname} @tab Directory name                   @findex dirname
-@item @code{file.path} @tab Construct path to file         @findex file.path
-@item @code{path.expand} @tab Expand @code{~} in Unix path @findex path.expand
+@item @code{basename} @tab File name without directory     
+@findex basename
+@item @code{dirname} @tab Directory name                   
+@findex dirname
+@item @code{file.path} @tab Construct path to file         
+@findex file.path
+@item @code{path.expand} @tab Expand @code{~} in Unix path 
+@findex path.expand
 @end multitable
 @end quotation
 
@@ -4471,7 +4493,8 @@ Newlines have a function which is a comb
 expression terminator.  If an expression can terminate at the end of
 the line the parser will assume it does so, otherwise the newline is
 treated as whitespace.  Semicolons (@samp{;}) may be used to separate
-elementary @cindex expression
+elementary 
+@cindex expression
 expressions on the same line.