Debian Bug report logs - #499328

new magic: Haskell program files

Reported by: Julian Gilbey <jdg@debian.org> Date: Wed, 17 Sep 2008 20:15:01 UTC Severity: wishlist Tags: confirmed, help, upstream Found in version file/4.25-1

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Report forwarded to debian-bugs-dist@lists.debian.org, Daniel Baumann <daniel@debian.org> :

Bug#499328 ; Package file . (full text, mbox, link).

Acknowledgement sent to Julian Gilbey <jdg@debian.org> :

New Bug report received and forwarded. Copy sent to Daniel Baumann <daniel@debian.org> . (full text, mbox, link).

Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Julian Gilbey <jdg@debian.org> To: Debian bug reports <submit@bugs.debian.org> Subject: file: recognise Haskell program files Date: Wed, 17 Sep 2008 21:13:15 +0100

Package: file Version: 4.25-1 Severity: wishlist Currently, file reports that a Haskell source file is actually a Java program text file. Oops. Julian

Information forwarded to debian-bugs-dist@lists.debian.org, Daniel Baumann <daniel@lists.debian-maintainers.org> :

Bug#499328 ; Package file . (Mon, 26 Apr 2010 16:33:06 GMT) (full text, mbox, link).

Acknowledgement sent to Gwern Branwen <gwern0@gmail.com> :

Extra info received and forwarded to list. Copy sent to Daniel Baumann <daniel@lists.debian-maintainers.org> . (Mon, 26 Apr 2010 16:33:06 GMT) (full text, mbox, link).

Message #10 received at 499328@bugs.debian.org (full text, mbox, reply):

From: Gwern Branwen <gwern0@gmail.com> To: 499328 <499328@bugs.debian.org> Subject: Heuristics Date: Mon, 26 Apr 2010 12:29:55 -0400

There are a couple heuristics that 'file' could use to detect Haskell files: - Java files always have {}s in them*. Haskell files may have {}s, but mostly don't. - Java 'import' statements end in ';'. Haskell 'import' statements are allowed to end in in ';' as part of the alternate syntax, but in practice very rarely do. I have hundreds** of Haskell source repositories, and grepping through them all, I found 12 repos*** using semicolons with import statements. - Haskell has some unusual syntax that Java doesn't; '::' in type signatures, for example. Or operators like '>>='. - Haskell modules usually start with either Haskell comments, -- or {- -}, which differ significantly from Java comments, // or /* */ - or they start or with the 'module' keyword, where Java would start with a visibility modifier, public/private/protected, module kinds, abstract/interface, and the 'class' keyword. - And of course, Haskell files are usually suffixed .hs or .lhs, while Java files are more usually .java Between these 6 differences, I think 'file' could quite reliably distinguish Java from Haskell files. * #java on Freenode tells me that a Java source file which consists only of 'import' statements can get away with no {}s, but such a file will do nothing useful. And 'package-info.java' files - some sort of autogenerated file - can also apparently be {}-free. But these are very much edge-cases and I think can be disregarded. ** roughly 970 *** hlint, ddc, jhc, open-witnesses, nobench, buddha, cabal, langage-c, bnfc, protocol-buffers, lhc, hera -- gwern

Changed Bug title to 'new magic: Haskell program files' from 'file: recognise Haskell program files' Request was from Daniel Baumann <daniel.baumann@progress-technologies.net> to control@bugs.debian.org . (Wed, 13 Mar 2013 12:03:25 GMT) (full text, mbox, link).

Information forwarded to debian-bugs-dist@lists.debian.org, Christoph Biedl <debian.axhn@manchmal.in-ulm.de> :

Bug#499328 ; Package file . (Fri, 07 Mar 2014 11:57:04 GMT) (full text, mbox, link).

Acknowledgement sent to Christoph Biedl <christoph@biedl.ath.cx> :

Extra info received and forwarded to list. Copy sent to Christoph Biedl <debian.axhn@manchmal.in-ulm.de> . (Fri, 07 Mar 2014 11:57:04 GMT) (full text, mbox, link).

Message #17 received at 499328@bugs.debian.org (full text, mbox, reply):

From: Christoph Biedl <christoph@biedl.ath.cx> To: Julian Gilbey <jdg@debian.org>, Gwern Branwen <gwern0@gmail.com>, 499328@bugs.debian.org Subject: Re: Bug#499328: Heuristics Date: Fri, 7 Mar 2014 12:55:25 +0100

tags 499328 confirmed upstream moreinfo thanks Gwern Branwen wrote... > There are a couple heuristics that 'file' could use to detect Haskell files: (...) I like that list, it should provide enough stuff to create good patterns. Since my knowledge of Haskell is rather limited (but I wrote some programs in Miranda many years ago), can you recommend a package of very typical Haskell sources (there is no such thing as typical sources, I know) so I can do tests? Just one thing: > - And of course, Haskell files are usually suffixed .hs or .lhs, while > Java files are more usually .java That one will not work, file(1) is completely filename agnostic. Christoph

Added tag(s) upstream, confirmed, and moreinfo. Request was from Christoph Biedl <christoph@biedl.ath.cx> to control@bugs.debian.org . (Fri, 07 Mar 2014 11:57:07 GMT) (full text, mbox, link).

Information forwarded to debian-bugs-dist@lists.debian.org, Christoph Biedl <debian.axhn@manchmal.in-ulm.de> :

Bug#499328 ; Package file . (Fri, 07 Mar 2014 16:48:21 GMT) (full text, mbox, link).

Acknowledgement sent to Gwern Branwen <gwern0@gmail.com> :

Extra info received and forwarded to list. Copy sent to Christoph Biedl <debian.axhn@manchmal.in-ulm.de> . (Fri, 07 Mar 2014 16:48:21 GMT) (full text, mbox, link).

Message #24 received at 499328@bugs.debian.org (full text, mbox, reply):

From: Gwern Branwen <gwern0@gmail.com> To: Christoph Biedl <christoph@biedl.ath.cx> Cc: Julian Gilbey <jdg@debian.org>, 499328 <499328@bugs.debian.org> Subject: Re: Bug#499328: Heuristics Date: Fri, 7 Mar 2014 11:46:08 -0500

On Fri, Mar 7, 2014 at 6:55 AM, Christoph Biedl <christoph@biedl.ath.cx> wrote: > Since my knowledge of Haskell is rather limited (but I wrote > some programs in Miranda many years ago), can you recommend a package > of very typical Haskell sources (there is no such thing as typical > sources, I know) so I can do tests? You can find all the Haskell sources you could desire on http://hackage.haskell.org/packages/ ; I'm not sure about *typical*, but as far as 'clean' goes, the XMonad source is pretty good, and if you want to keep accuracy on popular codebases, I'd suggest Darcs, Pandoc, & hledger. (GHC is probably way too big and gnarly to start on.) The CSV libraries are generally small, if that's helpful. -- gwern http://www.gwern.net

Removed tag(s) moreinfo. Request was from Christoph Biedl <debian.axhn@manchmal.in-ulm.de> to control@bugs.debian.org . (Sun, 09 Mar 2014 12:21:20 GMT) (full text, mbox, link).

Added tag(s) help. Request was from Christoph Biedl <debian.axhn@manchmal.in-ulm.de> to control@bugs.debian.org . (Sun, 09 Mar 2014 12:21:20 GMT) (full text, mbox, link).

Information forwarded to debian-bugs-dist@lists.debian.org, Christoph Biedl <debian.axhn@manchmal.in-ulm.de> :

Bug#499328 ; Package file . (Fri, 30 Aug 2019 19:27:03 GMT) (full text, mbox, link).

Acknowledgement sent to fatimaferson@gmail.com :

Extra info received and forwarded to list. Copy sent to Christoph Biedl <debian.axhn@manchmal.in-ulm.de> . (Fri, 30 Aug 2019 19:27:03 GMT) (full text, mbox, link).

Message #33 received at 499328@bugs.debian.org (full text, mbox, reply):

From: "fatimaferson@gmail.com" <griestkristen67@gmail.com> To: undisclosed-recipients:; Subject: Hello Date: Fri, 30 Aug 2019 19:25:23 +0000

-- Hello dear Friend My spirit ask me to contact you,please i will like you to write me back once you read my message Okay.

Information forwarded to debian-bugs-dist@lists.debian.org, Christoph Biedl <debian.axhn@manchmal.in-ulm.de> :

Bug#499328 ; Package file . (Fri, 30 Aug 2019 19:27:05 GMT) (full text, mbox, link).

Acknowledgement sent to fatimaferson@gmail.com :

Extra info received and forwarded to list. Copy sent to Christoph Biedl <debian.axhn@manchmal.in-ulm.de> . (Fri, 30 Aug 2019 19:27:05 GMT) (full text, mbox, link).

Message #38 received at 499328@bugs.debian.org (full text, mbox, reply):

From: "fatimaferson@gmail.com" <griestkristen67@gmail.com> To: undisclosed-recipients:; Subject: Hello Date: Fri, 30 Aug 2019 19:25:22 +0000

-- Hello dear Friend My spirit ask me to contact you,please i will like you to write me back once you read my message Okay.

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