Log Message:
Update to 1.13.1:

Changes in version 1.13.1, released on August 10, 2014

    --- MAJOR NEW FEATURES ---
 * A complete apropos(1)/makewhatis(8)/man.cgi(8) suite
   based on SQLite3 is now included.
   CAVEAT: This also requires a working fts(3) implementation.
   If your system lacks that *and* you want apropos(1)/makewhatis(8),
   stay with 1.12.3 for now, then go to 1.12.4 and 1.13.2.
   [wiz: for this reason, the package does not enable these tools yet]
 * The roff(7) parser now provides an almost complete implementation
   of numerical expressions.
 * Warning and error messages have been improved in many ways.
   Almost all fatal errors were downgraded to normal errors and some
   even to warnings.  Almost all messages now mention the macro where
   the issue is detected and many indicate the workaround employed.
   The mandoc(1) manual now includes a list explaining all messages.
    --- MINOR NEW FEATURES ---
 * The roff(7) parser now supports the .ami (append to macro with
   indirectly specified name), .as (append to user-defined
   string), .dei (define macro with indirectly specified name),
   .ll (line length), and .rr (remove register) requests.
 * The roff(7) parser now supports string comparison and numerical
   conditionals in the .if and .ie requests.
 * The roff parser now fully supports the \B (validate numerical
   expression) and partially supports the \w (measure text width)
   escape sequences.
 * The terminal formatter now supports the \: (optional line break)
   escape sequence.
 * The roff parser now supports expansion of user-defined strings
   involving indirect references.
 * The roff(7) parser now handles some pre-defined read-only
   number registers that occur in the pod2man(1) preamble.
 * For backward compatibility, the mdoc(7) parser and formatters
   now support the obsolete macros .En, .Es, .Fr, and .Ot.
 * The mdoc(7) formatter non partially supports .Bd -centered.
 * tbl(7) now handles leading and trailing vertical lines.
 * The build system now provides fallback versions of strcasestr(3)
   and strsep(3) for systems lacking them.
 * The mdoc(7) manual now explains how various standards
   supported by the .St macro are related to each other.
    --- BUGFIXES ---
 * In the roff(7) parser, several bugs were fixed with respect
   to closing conditional blocks on macro lines.
 * Parsing of roff(7) identifiers and escape sequences was improved
   in multiple respects.
 * In the mdoc(7) parser, the handling of defective document
   prologues was improved in multiple ways.
 * The mdoc(7) parser no longer skips content before the first section
   header, and it no longer deletes non-.% content from .Rs blocks.
 * In the mdoc(7) parser, a crash was fixed related to weird .Sh headers.
 * In the mdoc(7) parser, handling of .Sm with missing or invalid
   arguments was corrected.
 * In the mdoc(7) parser, trailing punctuation at the end of partial
   implicit macros no longer triggers end-of-sentence spacing.
 * In the terminal formatter, two crashes were fixed: one triggered by
   excessive indentation and another by excessively long .Nm arguments.
 * In the terminal formatter, a floating point rounding bug was
   fixed that sometimes caused an off-by-one error in indentation.
 * In the UTF-8 formatter, rendering of accents, breakable hyphens,
   and non-breakable spaces was corrected.
 * In the HTML formatter, encoding of special characters was
   corrected in multiple respects.
 * In the mdoc(7) formatter, rendering of .Ex and .Rv was
   improved for various edge cases.
 * In the mdoc(7) formatter, handling of empty .Bl -inset item
   heads was improved.
 * In the man(7) formatter, some bugs were fixed with respect
   to same-line detection in the context of .TP and .nf macros,
   and the indentation of .IP and .TP blocks was improved.
 * The mandoc(3) library no longer prints to stderr.
    --- THANKS TO ---
   Abhinav Upadhyay (NetBSD), Andreas Voegele, Anthony Bentley (OpenBSD),
   Christian Weisgerber (OpenBSD), Havard Eidnes (NetBSD), Jan Stary,
   Jason McIntyre (OpenBSD), Jeremie Courreges-Anglas (OpenBSD),
   Joerg Sonnenberger (NetBSD), Juan Francisco Cantero Hurtado (OpenBSD),
   Marc Espie (OpenBSD), Matthias Scheler (NetBSD), Pascal Stumpf (OpenBSD),
   Paul Onyschuk (Alpine Linux), Sebastien Marie, Steffen Nurpmeso,
   Stuart Henderson (OpenBSD), Ted Unangst (OpenBSD), Theo de Raadt (OpenBSD),
   Thomas Klausner (NetBSD), and Ulrich Spoerlein (FreeBSD)
   for reporting bugs and missing features.