From 18dea73f95d897bddc05942aa1544a7a21adb717 Mon Sep 17 00:00:00 2001
From: Oliver Kiddle <opk@users.sourceforge.net>
Date: Tue, 6 Nov 2001 15:16:04 +0000
Subject: [PATCH] fix for IRIX

---
 ChangeLog           |  4 ++
 Functions/Misc/mere | 92 +++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 93 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 83bc43adf..df2de2bce 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2001-11-06  Oliver Kiddle  <opk@zsh.org>
+
+	* unposted: Functions/Misc/mere: fix for IRIX
+
 2001-10-26  Wayne Davison  <wayned@users.sourceforge.net>
 
 	* 16184: Src/hist.c: Improved readhistline() to reject binary data
diff --git a/Functions/Misc/mere b/Functions/Misc/mere
index cf8d8ad14..410be9ab5 100644
--- a/Functions/Misc/mere
+++ b/Functions/Misc/mere
@@ -1,3 +1,89 @@
-#! /bin/sh
-# read a man page in the current directory
-nroff -man -Tman $1 | less -s
+# read a man page
+
+setopt localoptions extendedglob
+
+local manual="$1" col=col terminal=man magic line
+
+# /usr/bin/col on SunOS 4 doesn't support -x.
+if [[ -x /usr/5bin/col ]]; then
+  col=/usr/5bin/col;
+fi
+
+# SunOS 5 has no `man' terminal.
+if [[ -d /usr/share/lib/nterm &&
+    ! -e /usr/share/lib/nterm/tab.$terminal ]]; then
+  terminal=lp;
+fi
+
+# HP-UX has no `man' terminal.
+if [[ -d /usr/share/lib/term &&
+    ! -e /usr/share/lib/term/tab$terminal ]]; then
+  terminal=lp;
+fi
+
+# IRIX has no `man' terminal.
+if [[ -d /usr/lib/nterm &&
+    ! -e /usr/lib/nterm/tab.$terminal ]]; then
+  terminal=lp;
+fi
+
+# Unixware has no `man' terminal.
+if [[ -d /usr/ucblib/doctools/nterm &&
+    ! -e /usr/ucblib/doctools/nterm/tab.$terminal ]]; then
+  terminal=lp;
+fi
+
+# Solaris has SGML manuals.
+if [[ -f /usr/lib/sgml/sgml2roff ]] && 
+   [[ "$(read -er < $manual)" = "<!DOCTYPE"* ]]; then
+  /usr/lib/sgml/sgml2roff $manual | {
+    read -r line
+    if [[ $line = ".so "* ]]; then
+      # There is no cascading .so directive.
+      # On Solaris 7, at least.
+      /usr/lib/sgml/sgml2roff ${line#.so }
+    else
+      print -lr - "$line"
+      cat
+    fi
+  }
+else
+  read -u0 -k 2 magic < $manual
+  case $magic in
+  $'\037\235') zcat $manual;;
+  $'\037\213') gzip -dc $manual;;
+  *) cat $manual;;
+  esac
+fi | (
+  # cd is required to work soelim called by nroff.
+  case $manual in
+  */man/man*/*) cd ${manual:h:h};;
+  */man/sman*/*) cd ${manual:h:h};;
+  esac
+  read -r line
+  # The first line beginning with '\" shows preprocessors.
+  # Unknown preprocessors is ignored.
+  if [[ $line = "'\\\" "* ]]; then
+    typeset -A filter
+    filter=(
+      e neqn
+      g grap
+      p pic
+      r refer
+      t tbl
+      v vgrind
+    )
+    eval ${(j:|:)${${(s::)line#\'\\\" }//(#m)?/$filter[$MATCH]}}
+  elif [[ $line = "'\\\"! "* ]]; then
+    typeset -A filter
+    filter=(
+      eqn neqn
+    )
+    eval ${(j:|:)${${${${(s:|:)line#\'\\\"! }# ##}% ##}//(#m)*/$filter[$MATCH]}}
+  else
+    print -lr - "$line"
+    cat
+  fi |
+  nroff -T$terminal -man | $col -x
+) |
+${=MANPAGER:-${PAGER:-more}} -s