Format/typo check 1993/schnitzi + update bugs.md
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@@ -5,6 +5,18 @@ make all
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```
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### Bugs and (Mis)features:
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The current status of this entry is:
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```
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STATUS: INABIAF - please **DO NOT** fix
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```
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For more detailed information see [1993 schnitzi in bugs.md](/bugs.md#1993-schnitzi).
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## To use:
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```sh
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@@ -16,14 +28,7 @@ where
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`file` is a file containing some text.
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This entry will segfault if the file cannot be opened. This is not a bug.
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This is supposed to happen. As is written in the
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[The Jargon File](http://catb.org/jargon/html/F/feature.html):
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```
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That's not a bug, that's a feature.
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```
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Certain input will cause the program to fail as described in the bugs.md file.
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### Try:
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@@ -33,13 +38,15 @@ That's not a bug, that's a feature.
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# ask some questions suggested by the author, noted below
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```
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We also suggest you ask the program:
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We also suggest you ask the program the following questions:
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```sh
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Who is Mark Schnitzus?
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Who was Jack the Ripper ?
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```
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Notice how it still manages to answer the question despite there being an
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Notice how it still manages to answer the first question despite there being an
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intentional spelling error there.
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Try feeding the program source to the program and ask both:
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@@ -49,6 +56,9 @@ What is cat ?
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What is cat?
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```
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What happens if you ask it other questions with and without a space before the
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`?`?
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## Judges' remarks:
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@@ -64,16 +74,14 @@ The author suggests the following questions when using
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- What language is it written in?
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- Has the Loch Ness monster really been captured?
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- Who was Hitler?
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- Were the NASA moon landings faked?
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- Were the NASA Moon landings faked?
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- Is it true that Elvis is alive?
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- Do colorless green ideas sleep furiously?
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We suggest you try using the body (minus the header and signature line)\
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We suggest you try using the body (minus the header and signature line)
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of a Usenet article. You might want to try something from alt.flame. :-)
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NOTE: If you have a ' in the question this entry might fail.
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NOTE: The author may also be contacted at: marks@aldrin.ksc.nasa.gov.
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NOTE: If you have certain `'` in the question this entry might fail.
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## Author's remarks:
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@@ -84,27 +92,28 @@ text file. I thought this might be a complicated task, and I was
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right -- it took me over 800 bytes. Of course, it doesn't always
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work, but that's AI for you.
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This program accepts the name of a text file as the first
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parameter. For example, to run it on the supplied data file called
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'info' you would type `./schnitzi info`. It echoes the file, then
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gives you a prompt where you may type in questions about that text.
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The more words you use which are actually present in the text file,
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the better results you get. You'll need to hit `ctrl-c` to break out
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of the program. Just hitting `return` at the prompt will reprint the
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paragraph.
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This program accepts the name of a text file as the first parameter. For
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example, to run it on the supplied data file called 'schnitzi.info' you would
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type `./schnitzi schnitzi.info`. It echoes the file, then gives you a prompt
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where you may type in questions about that text. The more words you use which
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are actually present in the text file, the better results you get. You'll need
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to hit `ctrl-c` to break out of the program. Just hitting `return` at the
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prompt will reprint the paragraph.
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If you're curious as to how it works, I guess you could feed in the
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source as the input file and ask "How does this work?" at the prompt,
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but I'm not guaranteeing any results...
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### Compilation notes
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- The use of 'strcasecmp' may be non-standard. 'strcmp' can be substituted for
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- The use of `strcasecmp(3)` may be non-standard. `strcmp(3)` can be substituted for
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it, with a slight performance penalty.
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- This program depends on the first command-line parameter, typically called
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argv[0], to hold the name of the executable. It is my understanding that this
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property of argv[0] is not guaranteed on some systems.
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`argv[0]`, to hold the name of the executable. It is my understanding that this
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property of `argv[0]` is not guaranteed on some systems.
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### Obfuscation
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@@ -113,7 +122,7 @@ property of argv[0] is not guaranteed on some systems.
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- The layout, variable names, and expression format have been chosen in such a
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way as to cause visual confusion.
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- It uses uses external `system()` calls to echo the text file and break up the
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- It uses uses external `system(3)` calls to echo the text file and break up the
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question into individual words with a recursive call.
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- It uses a clever hack to simulate artificial intelligence.
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@@ -1011,6 +1011,62 @@ cannot be fixed for modern systems as the bug is long gone.
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An alternate version, however, does exist. See the README.md file for details.
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### STATUS: INABIAF - please **DO NOT** fix
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### Source code: [1993/schnitzi/schnitzi.c](1993/schnitzi/schnitzi.c)
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### Information: [1993/schnitzi/README.md](1993/schnitzi/README.md)
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If the file cannot be opened it will very likely segfault. This should not be
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fixed except for an exercise to yourself, should you wish to try.
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This program uses `system(3)` so if you provide invalid characters in the
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question you might cause an error. For instance don't do this:
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```sh
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$ ./schnitzi schnitzi.info
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This program answers questions about paragraphs
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of text posed to it in English. It is written
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in C. Mark Schnitzius is the author of this
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program.
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The Loch Ness monster has been captured. Elvis
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is alive. Hostler was a woman. The NASA moon
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landings were clearly faked.
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? What is foo'?
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```
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because doing so will result in something like:
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```
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sh: -c: line 0: unexpected EOF while looking for matching `''
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sh: -c: line 1: syntax error: unexpected end of file
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```
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with the program terminating. Other characters will also cause this problem.
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Of course if you do something like:
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```
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What is 'foo'?
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```
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it will work fine.
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### STATUS: INABIAF - please **DO NOT** fix
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### Source code: [1993/vanb/vanb.c](1993/vanb/vanb.c)
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### Information: [1993/vanb/README.md](1993/vanb/README.md)
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No spaces are allowed in the expression.
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The program does no error checking so erroneous expressions will produce
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spurious results.
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The unary `-` is an operator so decimal `-46` should be entered as `-d46` and
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not `d-46`.
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# 1994
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