Adding upstream version 2:8.1.0875.upstream/2%8.1.0875upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

11 files changed, 416 insertions, 0 deletions

diff --git a/runtime/macros/maze/Makefile b/runtime/macros/maze/Makefile
new file mode 100644
index 0000000..c34e115
--- /dev/null
+++ b/runtime/macros/maze/Makefile
@@ -0,0 +1,7 @@
+# It's simple...
+
+maze: mazeansi.c
+	cc -o maze mazeansi.c
+
+mazeclean: mazeclean.c
+	cc -o mazeclean mazeclean.c
diff --git a/runtime/macros/maze/README.txt b/runtime/macros/maze/README.txt
new file mode 100644
index 0000000..be8e8ef
--- /dev/null
+++ b/runtime/macros/maze/README.txt
@@ -0,0 +1,49 @@
+To run the maze macros with Vim:
+
+	vim -u maze_mac maze_5.78
+	press "g"
+
+The "-u maze.mac" loads the maze macros and skips loading your .vimrc, which
+may contain settings and mappings that get in the way.
+
+
+The original README:
+
+To prove that you can do anything in vi, I wrote a couple of macros that
+allows vi to solve mazes. It will solve any maze produced by maze.c
+that was posted to the net recently.
+
+Just follow this recipe and SEE FOR YOURSELF.
+	1. run uudecode on the file "maze.vi.macros.uu" to
+		produce the file "maze.vi.macros"
+	(If you can't wait to see the action, jump to step 4)
+	2. compile maze.c with "cc -o maze maze.c"
+	3. run maze > maze.out and input a small number (for example 10 if
+		you are on a fast machine, 3-5 if slow) which
+		is the size of the maze to produce
+	4. edit the maze (vi maze.out)
+	5. include the macros with the vi command:
+		:so maze.vi.macros
+	6. type the letter "g" (for "go") and watch vi solve the maze
+	7. when vi solves the maze, you will see why it lies
+	8. now look at maze.vi.macros and all will be revealed
+
+Tested on a sparc, a sun and a pyramid (although maze.c will not compile
+on the pyramid).
+
+Anyone who can't get the maze.c file to compile, get a new compiler,
+try maze.ansi.c which was also posted to the net.
+If you can get it to compile but the maze comes out looking like a fence
+and not a maze and you are using SysV or DOS replace the "27" on the
+last line of maze.c by "11"
+Thanks to John Tromp (tromp@piring.cwi.nl) for maze.c.
+Thanks to antonyc@nntp-server.caltech.edu (Bill T. Cat) for maze.ansi.c.
+
+Any donations should be in unmarked small denomination bills :^)=.
+
+		   ACSnet:  gregm@otc.otca.oz.au
+Greg McFarlane	     UUCP:  {uunet,mcvax}!otc.otca.oz.au!gregm
+|||| OTC ||	    Snail:  OTC R&D GPO Box 7000, Sydney 2001, Australia
+		    Phone:  +61 2 287 3139    Fax: +61 2 287 3299
+
+
diff --git a/runtime/macros/maze/README.txt.info b/runtime/macros/maze/README.txt.info
new file mode 100644
index 0000000..263ddcd
--- /dev/null
+++ b/runtime/macros/maze/README.txt.info
diff --git a/runtime/macros/maze/maze.c b/runtime/macros/maze/maze.c
new file mode 100644
index 0000000..b917453
--- /dev/null
+++ b/runtime/macros/maze/maze.c
@@ -0,0 +1,7 @@
+char*M,A,Z,E=40,J[40],T[40];main(C){for(*J=A=scanf(M="%d",&C);
+--            E;             J[              E]             =T
+[E   ]=  E)   printf("._");  for(;(A-=Z=!Z)  ||  (printf("\n|"
+)    ,   A    =              39              ,C             --
+)    ;   Z    ||    printf   (M   ))M[Z]=Z[A-(E   =A[J-Z])&&!C
+&    A   ==             T[                                  A]
+|6<<27<rand()||!C&!Z?J[T[E]=T[A]]=E,J[T[A]=A-Z]=A,"_.":" |"];}
diff --git a/runtime/macros/maze/maze_5.78 b/runtime/macros/maze/maze_5.78
new file mode 100644
index 0000000..dbe3d27
--- /dev/null
+++ b/runtime/macros/maze/maze_5.78
@@ -0,0 +1,16 @@
+._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
+| ._| . . ._| | |_._._. . ._|_._._._._. ._|_. ._|_._. ._| . ._|_. | . ._._. |
+| ._|_| |_. | | | | ._._|_._|_._. . |_. | | | ._._| |_._._| | ._. ._| . . |_|
+|_._._._. | ._|_. ._._._. | | ._. |_._. . | ._._| |_. | ._._._. |_. | |_|_| |
+| | . |_._| . ._._._| ._._. ._._| | | |_| . | |_. . ._|_| ._._. |_._|_| . | |
+|_._|_._._._|_._._._|_|_._._._|_._|_._._._|_._._._|_._._._|_._._._._._._|_._|
+
+See Vim solve a maze!
+
+   type ":so maze_mac<RETURN>" to load the macros
+
+   type "g" to start
+
+to interrupt type "<CTRL-C>"
+     to quit type ":q!<RETURN>"
+
diff --git a/runtime/macros/maze/maze_5.78.info b/runtime/macros/maze/maze_5.78.info
new file mode 100644
index 0000000..fd65cef
--- /dev/null
+++ b/runtime/macros/maze/maze_5.78.info
diff --git a/runtime/macros/maze/maze_mac b/runtime/macros/maze/maze_mac
new file mode 100644
index 0000000..621aeec
--- /dev/null
+++ b/runtime/macros/maze/maze_mac
@@ -0,0 +1,271 @@
+" These macros 'solve' any maze produced by the a-maze-ing maze.c program.
+"
+" First, a bit of maze theory.
+" If you were put into a maze, a guaranteed method of finding your way
+" out of the maze is to put your left hand onto a wall and just keep walking,
+" never taking your hand off the wall. This technique is only guaranteed to
+" work if the maze does not have any 'islands', or if the 'exit' is on the
+" same island as your starting point. These conditions hold for the mazes
+" under consideration.
+"
+" Assuming that the maze is made up of horizontal and vertical walls spaced
+" one step apart and that you can move either north, south, east or west,
+" then you can automate this procedure by carrying out the following steps.
+"
+" 1. Put yourself somewhere in the maze near a wall.
+" 2. Check if you have a wall on your left. If so, go to step 4.
+" 3. There is no wall on your left, so turn on the spot to your left and step
+"    forward by one step and repeat step 2.
+" 4. Check what is directly in front of you. If it is a wall, turn on the
+"    spot to your right by 90 degrees and repeat step 4.
+" 5. There is no wall in front of you, so step forward one step and
+"    go to step 2.
+"
+" In this way you will cover all the corridors of the maze (until you get back
+" to where you started from, if you do not stop).
+"
+" By examining a maze produced by the maze.c program you will see that
+" each square of the maze is one character high and two characters wide.
+" To go north or south, you move by a one character step, but to move east or
+" west you move by a two character step. Also note that in any position
+" there are four places where walls could be put - to the north, to the south,
+" to the east and to the west.
+" A wall exists to the north of you if the character to the north of
+" you is a _ (otherwise it is a space).
+" A wall exists to the east of you if the character to the east of you
+" is a | (otherwise it is a .).
+" A wall exists to the west of you if the character to the west of you
+" is a | (otherwise it is a .).
+" A wall exists to the south of you if the character where you are
+" is a _ (otherwise it is a space).
+"
+" Note the difference for direction south, where we must examine the character
+" where the cursor is rather than an adjacent cell.
+"
+" If you were implementing the above procedure is a normal computer language
+" you could use a loop with if statements and continue statements,
+" However, these constructs are not available in vi macros so I have used
+" a state machine with 8 states. Each state signifies the direction you
+" are going in and whether or not you have checked if there is a wall on
+" your left.
+"
+" The transition from state to state and the actions taken on each transition
+" are given in the state table below.
+" The names of the states are N1, N2, S1, S2, E1, E2, W1, W2, where each letter
+" stands for a direction of the compass, the number 1 indicates that the we
+" have not yet checked to see if there is a wall on our left and the number 2
+" indicates that we have checked and there is a wall on our left.
+"
+" For each state we must consider the existence or not of a wall in a
+" particular direction. This direction is given in the following table.
+"
+" NextChar table:
+" state        direction       vi commands
+"  N1              W               hF
+"  N2              N               kF
+"  S1              E               lF
+"  S2              S               F
+"  E1              N               kF
+"  E2              E               lF
+"  W1              S               F
+"  W2              W               hF
+"
+" where F is a macro which yanks the character under the cursor into
+" the NextChar register (n).
+"
+" State table:
+" In the 'vi commands' column is given the actions to carry out when in
+" this state and the NextChar is as given. The commands k, j, ll, hh move
+" the current position north, south, east and west respectively. The
+" command mm is used as a no-op command.
+" In the 'next state' column is given the new state of the machine after
+" the action is carried out.
+"
+" current state        NextChar    vi commands  next state
+"      N1                 .            hh          W1
+"      N1                 |            mm          N2
+"      N2                 _            mm          E1
+"      N2               space          k           N1
+"      S1                 .            ll          E1
+"      S1                 |            mm          S2
+"      S2                 _            mm          W1
+"      S2               space          j           S1
+"      E1               space          k           N1
+"      E1                 _            mm          E2
+"      E2                 |            mm          S1
+"      E2                 .            ll          E1
+"      W1               space          j           S1
+"      W1                 _            mm          W2
+"      W2                 |            mm          N1
+"      W2                 .            hh          W1
+"
+"
+" Complaint about vi macros:
+" It seems that you cannot have more than one 'undo-able' vi command
+" in the one macro, so you have to make lots of little macros and
+" put them together.
+"
+" I'll explain what I mean by an example. Edit a file and
+" type ':map Q rXY'. This should map the Q key to 'replace the
+" character under the cursor with X and yank the line'.
+" But when I type Q, vi tells me 'Can't yank inside global/macro' and
+" goes into ex mode. However if I type ':map Q rXT' and ':map T Y',
+" everything is OK. I`m doing all this on a Sparcstation.
+" If anyone reading this has an answer to this problem, the author would
+" love to find out. Mail to gregm@otc.otca.oz.au.
+"
+" The macros:
+" The macro to run the maze solver is 'g'. This simply calls two other
+" macros: I, to initialise everything, and L, to loop forever running
+" through the state table.
+" Both of these macros are long sequences of calls to other macros. All
+" of these other macros are quite simple and so to understand how this
+" works, all you need to do is examine macros I and L and learn what they
+" do (a simple sequence of vi actions) and how L loops (by calling U, which
+" simply calls L again).
+"
+" Macro I sets up the state table and NextChar table at the end of the file.
+" Macro L then searches these tables to find out what actions to perform and
+" what state changes to make.
+"
+" The entries in the state table all begin with a key consisting of the
+" letter 's', the current state and the NextChar.  After this is the
+" action to take in this state and after this is the next state to change to.
+"
+" The entries in the NextChar table begin with a key consisting of the
+" letter 'n' and the current state. After this is the action to take to
+" obtain NextChar - the character that must be examined to change state.
+"
+" One way to see what each part of the macros is doing is to type in the
+" body of the macros I and L manually (instead of typing 'g') and see
+" what happens at each step.
+"
+" Good luck.
+"
+" Registers used by the macros:
+" s (State)        - holds the state the machine is in
+" c (Char)         - holds the character under the current position
+" m (Macro)        - holds a vi command string to be executed later
+" n (NextChar)     - holds the character we must examine to change state
+" r (Second Macro) - holds a second vi command string to be executed later
+"
+set remap
+set nomagic
+set noterse
+set wrapscan
+"
+"================================================================
+" g - go runs the whole show
+"        I - initialise
+"        L - then loop forever
+map g   IL
+"
+"================================================================
+" I - initialise everything before running the loop
+"   G$?.^M - find the last . in the maze
+"        ^ - replace it with an X (the goal)
+"   GYKeDP - print the state table and next char table at the end of the file
+"       0S - initialise the state of the machine to E1
+"      2Gl - move to the top left cell of the maze
+map I   G$?.
^GYKeDP0S2Gl
+"
+"================================================================
+" L - the loop which is executed forever
+"        Q - save the current character in the Char register
+"        A - replace the current character with an 'O'
+"       ma - mark the current position with mark 'a'
+"      GNB - on bottom line, create a command to search the NextChar table
+"            for the current state
+" 0M0E@m^M - yank the command into the Macro register and execute it
+"       wX - we have now found the entry in the table, now yank the
+"            following word into the Macro register
+"     `a@m - go back to the current position and execute the macro, this will
+"            yank the NextChar in register n
+"   GT$B$R - on bottom line, create a command to search the state table
+"            for the current state and NextChar
+" 0M0E@m^M - yank the command into the Macro register and execute it
+"      2WS - we have now found the entry in the table, now yank the
+"            next state into the State macro
+"       bX - and yank the action corresponding to this state table entry
+"            into the Macro register
+"      GVJ - on bottom line, create a command to restore the current character
+"       0H - and save the command into the second Macro register
+"     `a@r - go back to the current position and exectute the macro to restore
+"            the current character
+"       @m - execute the action associated with this state
+"        U - and repeat
+map L   QAmaGNB0M0E@m
wX`a@mGT$B$R0M0E@m
2WSbXGVJ0H`a@r@mU
+"
+"================================================================
+" U - no tail recursion allowed in vi macros so cheat and set U = L
+map U   L
+"
+"================================================================
+" S - yank the next two characters into the State register
+map S   "sy2l
+"
+"================================================================
+" Q - save the current character in the Char register
+map Q   "cyl
+"
+"================================================================
+" A - replace the current character with an 'O'
+map A   rO
+"
+"================================================================
+" N - replace this line with the string 'n'
+map N   C/n
+"
+"================================================================
+" B - put the current state
+map B   "sp
+"
+"================================================================
+" M - yank this line into the Macro register
+map M   "my$
+"
+"================================================================
+" E - delete to the end of the line
+map E   d$
+"
+"================================================================
+" X - yank this word into the Macro register
+map X   "myt 
+"
+"================================================================
+" T - replace this line with the string 's'
+map T   C/s
+"
+"================================================================
+" R - put NextChar
+map R   "np
+"
+"================================================================
+" V - add the letter 'r' (the replace vi command)
+map V   ar
+"
+"================================================================
+" J - restore the current character
+map J   "cp
+"
+"================================================================
+" H - yank this line into the second Macro register
+map H   "ry$
+"
+"================================================================
+" F - yank NextChar (this macro is called from the Macro register)
+map F   "nyl
+"
+"================================================================
+" ^ - replace the current character with an 'X'
+map ^   rX
+"
+"================================================================
+" YKeDP - create the state table, NextChar table and initial state
+" Note that you have to escape the bar character, since it is special to
+" the map command (it indicates a new line).
+map Y   osE1  k  N1       sE1_ mm E2       sE2| mm S1       sE2. ll E1
+map K   osW1  j  S1       sW1_ mm W2       sW2| mm N1       sW2. hh W1
+map e   osN1. hh W1       sN1| mm N2       sN2  k  N1       sN2_ mm E1
+map D   osS1. ll E1       sS1| mm S2       sS2  j  S1       sS2_ mm W1
+map P   onE1 kF nE2 lF nW1 G$JF nW2 hF nN1 hF nN2 kF nS1 lF nS2 G$JF 
E1
diff --git a/runtime/macros/maze/mazeansi.c b/runtime/macros/maze/mazeansi.c
new file mode 100644
index 0000000..b8e5e79
--- /dev/null
+++ b/runtime/macros/maze/mazeansi.c
@@ -0,0 +1,7 @@
+char*M,A,Z,E=40,J[80],T[3];main(C){for(M=J+E,*J=A=scanf("%d",&
+C)            ;--            E;J             [E            ]=M
+[E   ]=  E)   printf("._");  for(;(A-=Z=!Z)  ||  (printf("\n|"
+)    ,   A    =              39              ,C             --
+)    ;   Z    ||    printf   (T   ))T[Z]=Z[A-(E   =A[J-Z])&&!C
+&    A   ==             M[                                  A]
+|6<<27<rand()||!C&!Z?J[M[E]=M[A]]=E,J[M[A]=A-Z]=A,"_.":" |"];}
diff --git a/runtime/macros/maze/mazeclean.c b/runtime/macros/maze/mazeclean.c
new file mode 100644
index 0000000..04dcebd
--- /dev/null
+++ b/runtime/macros/maze/mazeclean.c
@@ -0,0 +1,22 @@
+/*
+ * Cleaned-up version of the maze program.
+ * Doesn't look as nice, but should work with all C compilers.
+ * Sascha Wilde, October 2003
+ */
+#include <stdio.h>
+#include <stdlib.h>
+
+char *M, A, Z, E = 40, line[80], T[3];
+int
+main (C)
+{
+  for (M = line + E, *line = A = scanf ("%d", &C); --E; line[E] = M[E] = E)
+    printf ("._");
+  for (; (A -= Z = !Z) || (printf ("\n|"), A = 39, C--); Z || printf (T))
+    T[Z] = Z[A - (E = A[line - Z]) && !C
+	     & A == M[A]
+	     | RAND_MAX/3 < rand ()
+	     || !C & !Z ? line[M[E] = M[A]] = E, line[M[A] = A - Z] =
+	     A, "_." : " |"];
+  return 0;
+}
diff --git a/runtime/macros/maze/poster b/runtime/macros/maze/poster
new file mode 100644
index 0000000..9114f59
--- /dev/null
+++ b/runtime/macros/maze/poster
@@ -0,0 +1,37 @@
+Article 2846 of alt.sources:
+Path: oce-rd1!hp4nl!mcsun!uunet!munnari.oz.au!metro!otc!gregm
+From: gregm@otc.otca.oz.au (Greg McFarlane)
+Newsgroups: alt.sources
+Subject: VI SOLVES MAZE (commented macros)
+Message-ID: <2289@otc.otca.oz>
+Date: 10 Feb 91 23:31:02 GMT
+Sender: news@otc.otca.oz
+Reply-To: gregm@otc.otca.oz.au (Greg McFarlane)
+Organization: OTC Development Unit, Australia
+Lines: 464
+
+Submitted-by: gregm@otc.otca.oz.au
+Archive-name: maze_solving_vi_macros
+
+A real working model. See it walk the maze in front of your very own eyes.
+
+To prove that you can do anything in vi, I wrote a couple of macros that
+allows vi to solve mazes. It will solve any maze produced by maze.c
+that was posted to the alt.sources last month. (Maze.c is also included
+in this posting as well as an example of its output.)
+
+The uncommented version of the macros was sent to alt.sources last month.
+However, so many people mailed me requesting the commented version of the
+macros that I decided to post it. I have made some modifications to the
+original macros to make them easier to follow and also after I learnt
+that you can escape the special meaning of '|' in macros by using '^V|'.
+
+Save this article and unshar it. Then read maze.README.
+
+After studying these macros, anyone who cannot write an emacs emulator
+in vi macros should just curl up and :q!.
+
+Coming soon to a newsgroup near you: "Vi macros solve Tower of Hanoi",
+and a repost of the original "Turing Machine implemented in Vi macros"
+
+Anyone who has a version of these macros for edlin or nroff, please post.
diff --git a/runtime/macros/maze/poster.info b/runtime/macros/maze/poster.info
new file mode 100644
index 0000000..9a478d6
--- /dev/null
+++ b/runtime/macros/maze/poster.info