Merge pull request #1710 from xexyl/burton2019

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Landon Curt Noll authored and GitHub committed 2023-12-15 10:45:25 -08:00
commit 85f9224c9b
20 files changed
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@@ -8,6 +8,5 @@ indent.c
indent.o indent.o
mullender mullender
mullender.alt mullender.alt
mullender.alt2
mullender.orig mullender.orig
prog.orig prog.orig
+2 -2
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@@ -112,8 +112,8 @@ OBJ= ${PROG}.o
DATA= DATA=
TARGET= ${PROG} TARGET= ${PROG}
# #
ALT_OBJ= ${PROG}.alt.o ${PROG}.alt2.o ALT_OBJ= ${PROG}.alt.o
ALT_TARGET= ${PROG}.alt ${PROG}.alt2 ALT_TARGET= ${PROG}.alt
################# #################
+12 -14
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@@ -26,16 +26,18 @@ For more detailed information see [1984 mullender in bugs.md](/bugs.md#1984-mull
```sh ```sh
./mullender.alt [microseconds] ./mullender.alt [microseconds]
./mullender.alt2 [microseconds] # starts over after it times out
``` ```
The default microseconds is 10000 and it is also the lowest it can be as any Hit ctrl-c/intr to exit the program.
lower doesn't work very well. This feature is so you can experiment with
different speeds in between writes. It can be useful if your CPU is too slow or
too fast (:-) ).
The author stated that the original version also had a delay. The default microseconds is 190000 as this is approximately how long it slept in
the original entry but it can be no lower than 5000 as any lower doesn't work
very well. This feature is so you can experiment with different speeds in
between writes. It can be useful if your CPU is too fast :-)
The author stated that the original version also had a delay but the difference
is it required one to hit enter for it to print another line; the alt code will
start over once it times out or if one hits a key.
Note that the microseconds is argc and it uses `atoi()` which does NOT check for Note that the microseconds is argc and it uses `atoi()` which does NOT check for
overflow! overflow!
@@ -49,15 +51,11 @@ which is probably not as uncommon as you think :-).
```sh ```sh
./mullender.alt ./mullender.alt
./mullender.alt 5000 ./mullender.alt 5000 # wait for 5000 microseconds and see what happens
./mullender.alt 500 ./mullender.alt 20000 # wait for 20000 microseconds and see what happens
./mullender.alt 20000 ./mullender.alt 100000 # wait for 100000 microseconds and see what happens
./mullender.alt 100000
./mullender.alt2 500 # wait for 500 microseconds and see what happens
``` ```
What happens if you hit enter after it reaches the end of the line? Why? What What happens if you hit enter after it reaches the end of the line? Why? What
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@@ -1 +1 @@
main(i,v)char**v;{i=v[1]?atoi(v[1]):10000;i=i<500?500:i;do write(1," :-)\b\b\b\b",9),usleep(i);while(--i);write(1,"\n",1);} main(i,v)char**v;{j:i=v[1]?atoi(v[1]):190000;i=i<5000?5000:i;do write(1," :-)\b\b\b\b",9),usleep(i);while(--i);write(1,"\n",1);goto j;}
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@@ -1 +0,0 @@
main(i,v)char**v;{j:i=v[1]?atoi(v[1]):10000;i=i<500?500:i;do write(1," :-)\b\b\b\b",9),usleep(i);while(--i);write(1,"\n",1);goto j;}
+70 -44
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@@ -5,6 +5,17 @@ make
``` ```
### Bugs and (Mis)features:
The current status of this entry is:
```
STATUS: INABIAF - please **DO NOT** fix
```
For more detailed information see [2019 adamovsky in bugs.md](/bugs.md#2019-adamovsky).
## To use: ## To use:
```sh ```sh
@@ -15,17 +26,13 @@ make
### Try: ### Try:
```sh ```sh
./prog spam.unl ./try.sh
./prog sierpinski.unl | less
./prog advent.unl
``` ```
## Judges' remarks: ## Judges' remarks:
Even after pre-processing and indenting, the C code of this entry Even after pre-processing and indenting, the C code of this entry it
is about as understandable as the Unlambda code. is about as understandable as the Unlambda code.
Pretending that we don't know a bit of functional programming :) and lacking a Pretending that we don't know a bit of functional programming :) and lacking a
@@ -38,10 +45,16 @@ bytes which crashed it:
Functional programming is not a panacea against core dumps, after all. Functional programming is not a panacea against core dumps, after all.
This can be demonstrated by:
```sh
./prog crash.unl
```
## Author's remarks: ## Author's remarks:
**&#187;A highly structured state state machine&#171;** ### A highly structured state state machine
### Purpose: ### Purpose:
@@ -49,17 +62,18 @@ The purpose of this program is to allow you to play Colossal Cave Adventure as
implemented by [Kunihiko Sakamoto][1]. As that was written in [Unlambda programming implemented by [Kunihiko Sakamoto][1]. As that was written in [Unlambda programming
language][2] designed by David Alexander Madore it has to be an Unlambda interpreter. language][2] designed by David Alexander Madore it has to be an Unlambda interpreter.
### Aesthetics: ### Aesthetics:
The program grew a bit too long so I had to use several macros to downsize it. The program grew a bit too long so I had to use several macros to downsize it.
That unfortunately reduced my options for program layout. I decided to separate That unfortunately reduced my options for program layout. I decided to separate
it into two portions. The initial macro section where I had limited resources it into two portions: the initial macro section where I had limited resources
and you should disregard its shape, unless you like it, and the rest is a which you should disregard its shape, unless you like it, and the rest, which is a
separator in the form of a single line followed by a section signifying the separator in the form of a single line followed by a section signifying the
function of the program, a block with removed shape of lambda character. Even function of the program, a block with removed shape of lambda character. Even
the official IOCCC size tool acknowledges this: When you call `./iocccsize -i the official IOCCC size tool acknowledges this: When you call `./iocccsize -i
<prog.c`, using the [2019 version of <prog.c`, using the [2019 version of
iocccsize](https://www.ioccc.org/2019/iocccsize.c), iocccsize returns **955**, iocccsize](/2019/iocccsize.c), iocccsize returns **955**,
which is the Unicode codepoint of the **&#955;** character. which is the Unicode codepoint of the **&#955;** character.
It might be a surprise for you that according to the IOCCC size tool the program is It might be a surprise for you that according to the IOCCC size tool the program is
@@ -82,6 +96,8 @@ and run it like this:
./prog advent.unl ./prog advent.unl
``` ```
> NOTE: the file was added to the entry so there is no need to download it.
You can also try other programs from the Web. Many example programs are in the official You can also try other programs from the Web. Many example programs are in the official
[Unlambda distribution][3] on the Unlambda homepage. The most complex programs there are [Unlambda distribution][3] on the Unlambda homepage. The most complex programs there are
entries from [quine contest][4]. entries from [quine contest][4].
@@ -97,18 +113,21 @@ It will build the tool and use it to build an alternative program `prog2`, which
produce an Unlambda program `identify.unl`. `make identify` runs this program to identify produce an Unlambda program `identify.unl`. `make identify` runs this program to identify
itself. itself.
The base program (`prog`) implements an interpreter of Unlambda 2.0. It recognises all its The base program (`prog`) implements an interpreter of Unlambda 2.0. It
builtins (`k`, `s`, `i`, `v`, `c`, `d`, `.x`, `e`, `@`, `?x` and `|`) including the syntactic sugar function recognises all its builtins (`k`, `s`, `i`, `v`, `c`, `d`, `.x`, `e`, `@`, `?x`
`r` and formatting properties in the form of ignoring whitespace and comments and `|`) including the syntactic sugar function `r` and formatting properties in
to the end of line introduced by the `#` character. the form of ignoring whitespace and comments to the end of line introduced by
the `#` character.
In case of wrong usage (missing Unlambda program file or missing parameter) or use of an unseekable In case of wrong usage (missing Unlambda program file or missing parameter) or
Unlambda program source if it uses the `c` function, the program returns message `fail`. It use of an unseekable (`fseek(3)`) Unlambda program source if it uses the `c`
also informs you about syntactic errors in the Unlambda program should there be any (but only function, the program returns the message `fail`. It also informs you about
when the execution reaches them). syntactic errors in the Unlambda program should there be any (but only when the
execution reaches them).
The Unlambda source file may contain several Unlambda programs. The interpreter
will run them all in sequence.
The Unlambda source file may contain several Unlambda programs. The interpreter will run
them all in sequence.
### Unlambda ### Unlambda
@@ -117,19 +136,21 @@ a brief introduction or its [homepage][2] for an in depth discussion. For furthe
can visit Wikipedia pages on [Lambda Calculus][6] and [Combinatory Logic][7]. can visit Wikipedia pages on [Lambda Calculus][6] and [Combinatory Logic][7].
You can also play with an [online interpreter][8] by GitHub user inazz. There you can You can also play with an [online interpreter][8] by GitHub user inazz. There you can
debug one of example programs provided or try your wits in writing your own. debug one of the example programs provided or try your wits in writing your own.
### Hints: ### Hints:
Here are some pointers where to start when trying to understand the interpreter: Here are some pointers where to start when trying to understand the interpreter:
- Where is syntax error detected? - Where are syntax errors detected?
- How is the memory managed? - How is the memory managed?
- How does a program character turn into a function? - How does a program character turn into a function?
- How does exit function *e* work? - How does exit function `e` work?
- Can fD0 function be called? - Can `fD0` function be called?
- Are the function names familiar? (warning: some are misleading) - Are the function names familiar? (warning: some are misleading)
### Obfuscation sources ### Obfuscation sources
- The elephant in the room is the Unlambda language. As we all know, functional - The elephant in the room is the Unlambda language. As we all know, functional
@@ -138,19 +159,21 @@ unintelligible and hard to code in. Most of its functions are quite simple and
straightforward to implement, but two make it a mess: the promise operator `d` straightforward to implement, but two make it a mess: the promise operator `d`
and the call with current continuation `c`. and the call with current continuation `c`.
- Most of the additional obfuscation is derived from basic design choices. That - Most of the additional obfuscation is derived from basic design choices. That
is, how the state of the program is stored and how are the Unlambda functions is, how the state of the program is stored and how the Unlambda functions are
implemented. implemented.
More on this in the **Spoilers** section. More on this in the **Spoilers** section.
### Build notes: ### Build notes:
The program does not require any special treatment by compilers. Some warnings The program does not require any special treatment by compilers. Some warnings
had to be suppressed when compiling with `-Wall -Wextra -pedantic`. Those were had to be suppressed when compiling with `-Wall -Wextra -pedantic`. Those were
produced because of the formatting of the source code, not any programming produced because of the formatting of the source code, not any programming
technique. Compilation with `-Weverything` produced many more warnings, but those technique. Compilation with `clang -Weverything` produced many more warnings,
are only relevant for multi-source-file projects and some are really questionable but those are only relevant for multi-source-file projects and some are really
(e.g. `-Wdisabled-macro-expansion`). questionable (e.g. `-Wdisabled-macro-expansion`).
### Portability: ### Portability:
@@ -164,21 +187,22 @@ without it, but the stack runs out quickly with some Unlambda programs (e.g.
segfault). Clang with `-O3` option does this optimization well and said example segfault). Clang with `-O3` option does this optimization well and said example
does not segfault with it. I was not able to force GCC to optimize it out does not segfault with it. I was not able to force GCC to optimize it out
(probably an operator fault). (probably an operator fault).
- The only data structure of the program (the union structure) had much more - The only data structure of the program (the `union`) had much more
members originally. I joined all integers to a single long long member in the members originally. I joined all integers to a single `long long` member in the
name of obfuscation. It is used for reference counting (only 1 for every name of obfuscation. It is used for reference counting (only 1 for every
reference) among other uses. `size_t` should be used for that, but practically, reference) among other uses. `size_t` should be used for that, but practically,
I think the memory would run out sooner than the reference counter in any real I think the memory would run out sooner than the reference counter in any real
world situation even when `size_t` is bigger than `long long`. It is also used world situation even when `size_t` is bigger than `long long`. It is also used
for storing chars for later printing. This might produce some warnings, but for storing `char`s for later printing. This might produce some warnings, but
since it was developed using chars it should be always used safely. since it was developed using `char`s it should be always used safely.
### Spoilers: ### Spoilers:
- You can examine the [progSpoiler.c](progSpoiler.c) file. It is the original - You can examine the [progSpoiler.c](progSpoiler.c) file. It is the original
final version of the interpreter, before I started the downsizing. It accepts final version of the interpreter, before I started the downsizing. It accepts
one more optional parameter that specifies filename for the output Unlambda one more optional parameter that specifies a filename for the output Unlambda
function (it's the Unlambda function, that remains after all function function (it's the Unlambda function that remains after all function
applications are done). When no filename is provided, `stderr` is used. applications are done). When no filename is provided, `stderr` is used.
The function *output* is used for this additional functionality. You can use The function *output* is used for this additional functionality. You can use
@@ -209,32 +233,34 @@ away, and the stack stored in the continuation is restored.
This makes implementation of a complete debugger a bit more challenging. This makes implementation of a complete debugger a bit more challenging.
For this to work, the functions that do the work (i.e. make series of applications For this to work, the functions that do the work (i.e. make a series of applications
and/or evaluations each of which may be a call to current continuation), the `s` and/or evaluations each of which may be a call to current continuation), the `s`
combinator and the `` ` `` application operation had to be broken down to pieces, one combinator and the `` ` `` application operation had to be broken down to pieces, one
for each application/evaluation and corresponding helper functions for stack for each application/evaluation and corresponding helper functions for stack
rebuilding. (the helper functions are named beginning with *r* instead of *f*) rebuilding. (the helper functions are named beginning with `r` instead of `f`)
- The `` ` `` application operation does the reading of the Unlambda source when - The `` ` `` application operation does the reading of the Unlambda source when
needed. It also implements the promise function. Whenever it would apply it, it needed. It also implements the promise function. Whenever it would apply it, it
overwrites the Apply constructor in translation array `T`, changing its function overwrites the Apply constructor in translation array `T`, changing its function
to build unevaluated subtree that is later evaluated whenever the promise is to build an unevaluated sub-tree that is later evaluated whenever the promise is
applied. applied.
- To further the obfuscation, I shortened the function names while downsizing, - To further the obfuscation, I shortened the function names while downsizing,
but preserved their meaning (with the exception of Apply functions, which I but preserved their meaning (with the exception of Apply functions, which I
renamed to Y to possibly confuse with Y combinator). Simple functions retained renamed to `Y` to possibly confuse with `Y` combinator). Simple functions retained
their names to misguide the reader to believe to know what is what. The names of their names to misguide the reader to believe to know what is what. The names of
continuation and exit functions were swapped. The names of S and Apply functions continuation and exit functions were swapped. The names of `S` and Apply functions
were shuffled both for S functions and Apply functions in the same way to hide were shuffled both for `S` functions and Apply functions in the same way to hide
the meaning of `f` and `r` prefixes. the meaning of `f` and `r` prefixes.
### Identification spoiler: ### Identification spoiler:
The alternative build path `make identify` output commemorates a [previous IOCCC The alternative build path `make identify` output commemorates a [previous IOCCC
winner][9] which uses similar methods to mess with the size tool. winner][9] which uses similar methods to mess with the size tool.
### Judges' remarks spoilers:
### Judges' spoilers:
It is not a bug, it is a feature. :) It is not a bug, it is a feature. :)
@@ -249,12 +275,12 @@ system settings (on Linux) or compiler options (on Windows) if your Unlambda
program needs it. Nevertheless, it will not help the judges' program which program needs it. Nevertheless, it will not help the judges' program which
quickly depletes any limit you define. quickly depletes any limit you define.
The judges, pretending not to know what they are doing, created a program that The judges, pretending to not know what they are doing, created a program that
grows Unlambda execution stack indefinitely. You may consider it an Unlambda grows Unlambda execution stack indefinitely. You may consider it an Unlambda
anti-pattern. Normally, infinite cycles in Unlambda work by creating two anti-pattern. Normally, infinite cycles in Unlambda work by creating two
functions and applying one to the other which creates further functions to functions and applying one to the other which creates further functions to
apply. The application of the function frees its position on the stack. This apply. The application of the function frees its position on the stack. This
program builds one ever growing function that will never be complete and able to program builds one ever growing function that will never be complete and be able to
be applied. be applied.
[1]: https://github.com/irori/advent-unlambda "Adventure" [1]: https://github.com/irori/advent-unlambda "Adventure"
@@ -265,7 +291,7 @@ be applied.
[6]: https://en.wikipedia.org/wiki/Lambda_calculus "Lambda Calculus on Wikipedia" [6]: https://en.wikipedia.org/wiki/Lambda_calculus "Lambda Calculus on Wikipedia"
[7]: https://en.wikipedia.org/wiki/Combinatory_logic "Combinatory Logic on Wikipedia" [7]: https://en.wikipedia.org/wiki/Combinatory_logic "Combinatory Logic on Wikipedia"
[8]: https://inazz.jp/unlambda/ "Online Unlambda interpreter" [8]: https://inazz.jp/unlambda/ "Online Unlambda interpreter"
[9]: http://ioccc.org/2014/birken/hint.html "Best use of port 1701" [9]: /2014/birken/README.md "Best use of port 1701"
## Copyright and CC BY-SA 4.0 License: ## Copyright and CC BY-SA 4.0 License:
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@@ -0,0 +1 @@
````.0`.0`.0`c.0``sssss
+37
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@@ -0,0 +1,37 @@
#!/usr/bin/env bash
#
# try.sh - demonstrate IOCCC winner 2019/adamovsky
#
# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
# this way allows us to have the user specify a different compiler in an easy
# way.
if [[ -z "$CC" ]]; then
CC="cc"
fi
make CC="$CC" all >/dev/null || exit 1
# clear screen after compilation so that only the entry is shown
clear
echo 1>&2
echo "$ ./prog spam.unl | head -n 100 | less -EXF" 1>&2
read -r -n 1 -p "Press any key to continue: "
echo 1>&2
./prog spam.unl | head -n 100 | less -EXF
echo 1>&2
echo "$ ./prog sierpinski.unl | head -n 200 | less -EXF" 1>&2
read -r -n 1 -p "Press any key to continue: "
echo 1>&2
./prog sierpinski.unl | head -n 200 | less -EXF
echo "$ make identify" 1>&2
make identify
echo 1>&2
read -r -p "Do you want to play Colossal Cave Adventure (Y/N)? "
if [[ "$REPLY" == "Y" || "$REPLY" == "y" ]]; then
./prog advent.unl
fi
+2 -2
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@@ -50,7 +50,7 @@
"winners_text" : "original source" "winners_text" : "original source"
}, },
{ {
"file_path" : "check", "file_path" : "check.sh",
"winners_rank" : 100, "winners_rank" : 100,
"created_by" : null, "created_by" : null,
"prog" : null, "prog" : null,
@@ -60,7 +60,7 @@
"winners_text" : "test suite" "winners_text" : "test suite"
}, },
{ {
"file_path" : "cow", "file_path" : "cow.sh",
"winners_rank" : 100, "winners_rank" : 100,
"created_by" : null, "created_by" : null,
"prog" : null, "prog" : null,
+5 -5
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@@ -139,12 +139,12 @@ remarks: README.md
${RM} -f $@ ${RM} -f $@
${CP} $? $@ ${CP} $? $@
correct: newlines remarks 256 check correct: newlines remarks 256 check.sh
env out=${CAT} ${SHELL} ./check ${WC} > $@ env out=${CAT} ${SHELL} ./check.sh ${WC} > $@
test: ${PROG} ${PROG}.clean correct check test: ${PROG} ${PROG}.clean correct check.sh
-${SHELL} ./check ./${PROG} -${SHELL} ./check.sh ./${PROG}
-${SHELL} ./check ./${PROG}.clean -${SHELL} ./check.sh ./${PROG}.clean
# alternative executable # alternative executable
# #
+25 -8
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@@ -5,17 +5,30 @@ make
``` ```
### Bugs and (Mis)features:
The current status of this entry is:
```
STATUS: INABIAF - please **DO NOT** fix
```
For more detailed information see [2019 burton in bugs.md](/bugs.md#2019-burton).
## To use: ## To use:
```sh ```sh
./prog < prog.c ./prog < file
./cow file
``` ```
### Try: ### Try:
```sh ```sh
echo "Do or do not. There is no try." ./try.sh
``` ```
@@ -30,7 +43,7 @@ unix utilities available as winning entries.
### Synopsis: ### Synopsis:
Feed it anything on stdin. Feed it anything on `stdin`.
The output should look familiar. The output should look familiar.
Compiles cleanly with: Compiles cleanly with:
@@ -44,11 +57,11 @@ cc -Wall -Wextra -Weverything -pedantic $WARN -include stdio.h -o prog prog.c
Included is a test script, useful for the corner cases. As in all good Unix Included is a test script, useful for the corner cases. As in all good Unix
programs, it is silent upon success; any output demonstrates an error. Instead programs, it is silent upon success; any output demonstrates an error. Instead
of checking correctness, the check script can simply output the results: (The of checking correctness, the [check.sh](check.sh) script can simply output the
Makefile contains the spoiler): results: (The Makefile contains the spoiler):
```sh ```sh
out=cat ./check ./prog out=cat ./check.sh ./prog
``` ```
Interestingly, and a spoiler here: macOS and FreeBSD implement the common Interestingly, and a spoiler here: macOS and FreeBSD implement the common
@@ -60,20 +73,24 @@ on these systems omit these characters from the description.
This program follows FreeBSD and macOS, the arbiters of correct for these purposes. This program follows FreeBSD and macOS, the arbiters of correct for these purposes.
### Limits: ### Limits:
Requires the C locale and ASCII character set. Requires the C locale and ASCII character set.
Input should be less than ten million octets "toavoidthisproblem". Input should be less than ten million octets "toavoidthisproblem".
### See Also: ### See Also:
You can enjoy this code from beginning to end. You can enjoy this code from beginning to end.
No whitespace was harmed in the creation of this program. No whitespace was harmed in the creation of this program.
All your base belong to us, but the constants seem a bit ... off? All your base belong to us, but the constants seem a bit ... off?
### Bonus ### Bonus
The script `cow` provides a closer analog, and perhaps a more useful interface. The script [cow.sh](cow.sh) provides a closer analog, and perhaps a more useful
interface.
Included is a version without compilation warnings: Included is a version without compilation warnings:
@@ -83,7 +100,7 @@ cc -Wall -Wextra -Weverything -pedantic -include stdio.h -o prog.clean prog.clea
### Bugs ### Bugs
The flags are not supported. Although they could easily be added into `cow`. The flags are not supported. Although they could easily be added into `cow.sh`.
This exercise left to the reader. This exercise left to the reader.
-17
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@@ -1,17 +0,0 @@
#!/usr/bin/env bash
x=$1
: ${x:=./prog}
: ${out:="diff - correct"}
(
/bin/echo -n | $x
$x < /dev/null
echo | $x
/bin/echo -n a | $x
echo a | $x
$x < newlines
$x < 256
$x < remarks
) | $out
+24
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@@ -0,0 +1,24 @@
#!/usr/bin/env bash
x=$1
: "${x:=./prog}"
if [[ ! -x "$x" ]]; then
x="./prog"
fi
: "${out:="diff - correct"}"
(
/bin/echo -n | $x
$x < /dev/null
echo | $x
/bin/echo -n a | $x
echo a | $x
$x < newlines
# ^---^ SC2210 (warning): This is a file redirection. Was it supposed to be a comparison or fd operation?
# Answer: 256 is a file so it is supposed to be file redirection.
# shellcheck disable=SC2210
$x < 256
$x < remarks
) | $out
-19
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@@ -1,19 +0,0 @@
#!/usr/bin/env bash
if test $# -eq 0; then
./prog
exit 0
fi
args=$*
for name in $args
do if test -r $name; then
s=$(./prog < $name)
echo "$s" $name
set -- $s
((a += $1))
((b += $2))
((c += $3))
((d += 1))
fi; done
((d > 1)) && printf "%8d%8d%8d total\n" $a $b $c
+26
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@@ -0,0 +1,26 @@
#!/usr/bin/env bash
if test $# -eq 0; then
./prog
exit 0
fi
args=$*
for name in $args
do if test -r "$name"; then
s=$(./prog < "$name")
echo "$s" "$name"
# We have to disable this warning to prevent ShellCheck from being a cow.sh
# (or, to use Bart Simpson's advice, make it 'not have a cow.sh'), as we
# actually need this to happen:
#
# ^-- SC2086 (info): Double quote to prevent globbing and word splitting.
#
# shellcheck disable=SC2086
set -- $s
((a += $1))
((b += $2))
((c += $3))
((d += 1))
fi; done
((d > 1)) && printf "%8d%8d%8d total\n" "$a" "$b" "$c"
+1 -1
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@@ -25,7 +25,7 @@
<hr style="width:50%;text-align:left;margin-left:0"> <hr style="width:50%;text-align:left;margin-left:0">
<!-- Start Nu Html Checker --> <!-- Start Nu Html Checker -->
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</body> </body>
+3 -3
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@@ -219,13 +219,13 @@ href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2019/burton/prog.
<tr class="odd"> <tr class="odd">
<td style="text-align: left;">test suite</td> <td style="text-align: left;">test suite</td>
<td style="text-align: left;"><a <td style="text-align: left;"><a
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2019/burton/check">check</a></td> href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2019/burton/check.sh">check.sh</a></td>
</tr> </tr>
<tr class="even"> <tr class="even">
<td style="text-align: left;">an alternate implementation with a useful <td style="text-align: left;">an alternate implementation with a useful
interface</td> interface</td>
<td style="text-align: left;"><a <td style="text-align: left;"><a
href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2019/burton/cow">cow</a></td> href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2019/burton/cow.sh">cow.sh</a></td>
</tr> </tr>
<tr class="odd"> <tr class="odd">
<td style="text-align: left;">on writing an IOCCC one-liner</td> <td style="text-align: left;">on writing an IOCCC one-liner</td>
@@ -276,7 +276,7 @@ href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2019/burton/newli
</tr> </tr>
</tbody> </tbody>
</table> </table>
<h4 id="nu-html-check">Nu HTML check</h4> <h4 id="nu-html-check.sh">Nu HTML check.sh</h4>
<p>For web site admin: <a <p>For web site admin: <a
href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F2019%2Fburton%2Finventory.html">Check href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F2019%2Fburton%2Finventory.html">Check
HTML</a></p> HTML</a></p>
+29
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@@ -0,0 +1,29 @@
#!/usr/bin/env bash
#
# try.sh - demonstrate IOCCC winner 2019/burton
#
# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
# this way allows us to have the user specify a different compiler in an easy
# way.
if [[ -z "$CC" ]]; then
CC="cc"
fi
make CC="$CC" all >/dev/null || exit 1
# clear screen after compilation so that only the entry is shown
clear
echo "$ cat prog.c" 1>&2
cat prog.c
echo 1>&2
for i in prog.c Makefile README.md; do
echo "$ ./prog < $i && wc < $i" 1>&2
printf "prog: %s\n%4s: %s\n\n" "$(./prog < "$i"|tr -s ' ')" "wc" "$(wc "$i" | tr -s ' ')"
done
echo 1>&2
echo "$ make test" 1>&2
make test
+20
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@@ -3257,6 +3257,26 @@ The author wrote the following:
# 2019 # 2019
## 2019 adamovsky
### STATUS: INABIAF - please **DO NOT** fix
### Source code: [2019/adamovsky/prog.c](/2019/adamovsky/prog.c)
### Information: [2019/adamovsky/README.md](/2019/adamovsky/README.md)
Certain input can crash this program. The file
[crash.unl](/2019/adamovsky/crash.unl) is an example file.
## 2019 burton
### STATUS: INABIAF - please **DO NOT** fix
### Source code: [2019/burton/prog.c](2019/burton/prog.c)
### Information: [2019/burton/README.md](2019/burton/README.md)
The author pointed out that some implementations of `wc(1)` show different
values but his implementation matches that of macOS and FreeBSD.
## 2019 duble ## 2019 duble
### STATUS: INABIAF - please **DO NOT** fix ### STATUS: INABIAF - please **DO NOT** fix
+40 -22
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@@ -130,15 +130,15 @@ This was fixed on 30 October 2023 after the bug status was changed from INABIAF
## <a name="1984_mullender"></a>[1984/mullender](/1984/mullender/mullender.c) ([README.md](/1984/mullender/README.md])) ## <a name="1984_mullender"></a>[1984/mullender](/1984/mullender/mullender.c) ([README.md](/1984/mullender/README.md]))
[Cody](#cody) provided an [alternate version](/1984/mullender/mullender.alt.c), an [Cody](#cody) provided an [alternate version](/1984/mullender/mullender.alt.c),
improved version of the judges, so that everyone can enjoy it with systems that an improved version of the judges, so that everyone can enjoy it with systems
are not VAX/PDP. We also refer you to the [FAQ](faq.md) as there are some that are not VAX/PDP. It moves at approximately the same speed as the original
winning entries that also let one enjoy it - with more to them of course! did. We also refer you to the [FAQ](faq.md) as there are some winning entries
that also let one enjoy it (which through trial and error was how the right
Cody further added the second alt version, speed was discovered) - with more to them of course! The difference between the
[mullender.alt2.c](/1984/mullender/mullender.alt2.c) which is like the original is that it will start over after it times out but that might not happen
[1984/mullender/mullender.alt.c](/1984/mullender/mullender.alt.c) except that it with the original (might need you to press a key though this is not known for
starts over after it times out. sure).
Cody also added the [gentab.c](/1984/mullender/gentab.c) file, fixed to compile Cody also added the [gentab.c](/1984/mullender/gentab.c) file, fixed to compile
(and work, though see [bugs.md](#1984mullender-readmemd)) with modern systems (and work, though see [bugs.md](#1984mullender-readmemd)) with modern systems
@@ -4065,6 +4065,19 @@ that's probably true: let's just say that for the IOCCC I'm (Cody) a weasel! :-)
Cody also added the [try.sh](/2018/hou/try.sh) script. Cody also added the [try.sh](/2018/hou/try.sh) script.
## <a name="2018_poikola"></a>[2018/poikola](/2018/poikola/prog.c) ([README.md[(/2018/poikola/README.md))
[Cody](#cody) added the missing `docs` rule to the Makefile that forms a PDF
file. The rule requires the tool `pdflatex`.
Cody also added the [try.sh](/2018/poikola/try.sh) script.
[Dave Burton](/winners.html#Dave_Burton), during the preview period, noticed a
problem where the macOS `Terminal.app` does not work properly for this program.
We added some additional notes on what might happen (it varies depending on
configuration).
## <a name="2018_vokes"></a>[2018/vokes](/2018/vokes/prog.c) ([README.md](/2018/vokes/README.md)) ## <a name="2018_vokes"></a>[2018/vokes](/2018/vokes/prog.c) ([README.md](/2018/vokes/README.md))
[Cody](#cody) added the [try.sh](/2018/vokes/try.sh) script. [Cody](#cody) added the [try.sh](/2018/vokes/try.sh) script.
@@ -4081,11 +4094,29 @@ if the user wants to see some of the spoilers and only show them if they type
# <a name="2019"></a>2019 # <a name="2019"></a>2019
## <a name="2019_adamovsky"></a>[2019/adamovsky](/2019/adamovsky/prog.c) ([README.md](/2019/adamovsky/README.md]))
[Cody](#cody) added the [try.sh](/2019/adamovsky/try.sh) script and the Unlambda
file [crash.unl](/2019/adamovsky/crash.unl) which is in the judges' remarks as
to what can crash it - but it's not a bug, it's a feature.
## <a name="2019_burton"></a>[2019/burton](/2019/burton/prog.c) ([README.md](/2019/burton/README.md])) ## <a name="2019_burton"></a>[2019/burton](/2019/burton/prog.c) ([README.md](/2019/burton/README.md]))
[Cody](#cody) fixed the Makefile which had a bad character, a '%' instead of a '$' which [Cody](#cody) fixed the Makefile which had a bad character, a '%' instead of a '$' which
caused a rule to fail. caused a rule to fail.
Cody also added the [try.sh](/2019/burton/try.sh) script which shows a
side-by-side comparison on several files of the entry and `wc(1)` as well as
running `make test`.
Cody also fixed the script [check.sh](/2019/burton/check.sh) (renamed from
`check`) in case `x` is specified and is not executable and also made it satisfy
ShellCheck. He also made ShellCheck not be a cow and/or (to use Bart Simpson's
advice :-) ) 'not have a cow' about certain things (including one thing it was
wrong about) in [cow.sh](/2019/burton/cow.sh) (which was renamed from `cow`)
<strike>moo</strike>too.
## <a name="2019_ciura"></a>[2019/ciura](/2019/ciura/prog.c) ([README.md](/2019/ciura/README.md])) ## <a name="2019_ciura"></a>[2019/ciura](/2019/ciura/prog.c) ([README.md](/2019/ciura/README.md]))
@@ -4127,19 +4158,6 @@ compilation as debugging symbols might just be useful for an entry that's
supposed to segfault :-) supposed to segfault :-)
## <a name="2019_poikola"></a>[2019/poikola](/2019/poikola/prog.c) ([README.md[(/2019/poikola/README.md))
[Cody](#cody) added the `docs` rule to the Makefile that forms a PDF file. The
rule requires the tool `pdflatex`.
Cody also added the [try.sh](/2019/poikola/try.sh) script.
[Dave Burton](/winners.html#Dave_Burton), during the preview period, noticed a
problem where the macOS `Terminal.app` does not work properly for this program.
We added some additional notes on what might happen (it varies depending on
configuration).
## <a name="2019_karns"></a>[2019/karns](/2019/karns/prog.c) ([README.md](/2019/karns/README.md])) ## <a name="2019_karns"></a>[2019/karns](/2019/karns/prog.c) ([README.md](/2019/karns/README.md]))
[Cody](#cody) reported that with `-O` level > 0 this program segfaults (sometimes?). He's [Cody](#cody) reported that with `-O` level > 0 this program segfaults (sometimes?). He's