Possible bug in Git

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From: David Martínez Martí
Date: Thursday, April 15, 2010 - 3:47 am

(Please add deavidsedice@gmail.com and desarrollo@gestiweb.com to CC 
because I'm not suscripted to this list)

Here I've a strange behaviour in GIT:

We noticed a file in our repo is empty: 
facturacion/facturacion/scripts/lineasfacturascli.qs

We didn't found the reason using gitk --all -- 
facturacion/facturacion/scripts/lineasfacturascli.qs

With git bisect we found the problematic commit: 
dac6a95f559604978ff9e1fac24ad752c54382ae

With git show, it doesn't show anything about the modification:

$ git show dac6a95f5 -p --pretty=raw -- 
facturacion/facturacion/scripts/lineasfacturascli.qs
commit dac6a95f559604978ff9e1fac24ad752c54382ae
tree f1472f1d289f9813df5fd691c9cea6ccb04313a7
parent 5dfdd78f24f4578cdfeed876b8bacb45790af9ef
parent 6ed54c8c6508b6d5551290b45785eaf44dd05d75
author David Martinez Marti <desarrollo@gestiweb.com> 1260959309 +0100
committer David Martinez Marti <desarrollo@gestiweb.com> 1260959309 +0100

     Merge remote branch 'origin/infosial'

     Conflicts:
         contabilidad/informes/scripts/flcontinfo.qs
         facturacion/almacen/forms/articulos.ui
         facturacion/almacen/scripts/articulos.qs
         facturacion/almacen/tables/factalma_general.mtd
         facturacion/facturacion/forms/albaranescli.ui
         facturacion/facturacion/forms/albaranesprov.ui
         facturacion/facturacion/forms/facturasprov.ui
         facturacion/facturacion/forms/pedidoscli.ui
         facturacion/facturacion/forms/pedidosprov.ui
         facturacion/facturacion/forms/presupuestoscli.ui
         facturacion/facturacion/scripts/facturascli.qs
         facturacion/facturacion/scripts/facturasprov.qs
         facturacion/facturacion/scripts/flfacturac.qs
         facturacion/facturacion/scripts/lineasalbaranescli.qs
         facturacion/facturacion/scripts/lineasfacturascli.qs
         facturacion/facturacion/scripts/lineaspresupuestoscli.qs
         facturacion/informes/flfactinfo.xml
         facturacion/informes/forms/i_reciboscli.ui
         facturacion/informes/forms/i_recibosprov.ui
         facturacion/informes/queries/i_reciboscli.qry
         facturacion/informes/queries/i_recibosprov.qry
         facturacion/informes/queries/i_resreciboscli.qry
         facturacion/informes/queries/i_resrecibosprov.qry
         facturacion/informes/scripts/flfactinfo.qs
         facturacion/informes/scripts/i_masterinventario.qs
         facturacion/principal/flfactppal.xml
         facturacion/principal/forms/agentes.ui
         facturacion/principal/forms/clientes.ui
         facturacion/principal/forms/empresa.ui
         facturacion/principal/forms/flfactppal.ui
         facturacion/principal/forms/proveedores.ui
         facturacion/principal/scripts/clientes.qs
         facturacion/principal/scripts/proveedores.qs
         facturacion/principal/tables/clientes.mtd
         facturacion/principal/tables/proveedores.mtd
         facturacion/tesoreria/tables/reciboscli.mtd




There was a conflict on that file but it doesn't show anything changed 
about it. Gitk does the same.

git show commit^1:path and git show commit^2:path shows the files:

$ git show 
dac6a95f5^1:facturacion/facturacion/scripts/lineasfacturascli.qs | head
/***************************************************************************
                  lineasfacturascli.qs  -  description
                              -------------------
     begin                : lun abr 26 2004
     copyright            : (C) 2004 by InfoSiAL S.L.
     email                : mail@infosial.com
  ***************************************************************************/
/***************************************************************************
  *                                                                         *
  *   This program is free software; you can redistribute it and/or 
modify  *


$ git show 
dac6a95f5^2:facturacion/facturacion/scripts/lineasfacturascli.qs | head
/***************************************************************************
                  lineasfacturascli.qs  -  description
                              -------------------
     begin                : lun abr 26 2004
     copyright            : (C) 2004 by InfoSiAL S.L.
     email                : mail@infosial.com
  ***************************************************************************/
/***************************************************************************
  *                                                                         *
  *   This program is free software; you can redistribute it and/or 
modify  *


git show commit:path shows empty file:
$ git show 
dac6a95f5:facturacion/facturacion/scripts/lineasfacturascli.qs | wc
       0       0       0



I believe that changes *should* appear on git log -p and on gitk, and 
they doesn't, so I think it may be a bug in some git tools.

Tell me if I can do anything to fdetermine if it's really a bug and 
where it is to help GIT devs resovling it.

PD: I know my merge failed somehow, and I corrected it in a newer commit.
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Messages in current thread:
Possible bug in Git, David Martínez Martí, (Thu Apr 15, 3:47 am)
[PATCH] combined diff: correctly handle truncated file, Thomas Rast, (Thu Apr 15, 5:59 am)
Re: Possible bug in Git, Avery Pennarun, (Thu Apr 15, 4:45 pm)
Re: Possible bug in Git, Junio C Hamano, (Thu Apr 15, 5:01 pm)
Re: Possible bug in Git, Avery Pennarun, (Thu Apr 15, 5:06 pm)
Re: Possible bug in Git, Avery Pennarun, (Thu Apr 15, 5:13 pm)
Re: Possible bug in Git, Jay Soffian, (Thu Apr 15, 5:38 pm)
Re: Possible bug in Git, Avery Pennarun, (Thu Apr 15, 5:45 pm)
Re: Possible bug in Git, Linus Torvalds, (Fri Apr 16, 8:53 am)
Re: Possible bug in Git, Thomas Rast, (Fri Apr 16, 9:39 am)
Re: Possible bug in Git, Junio C Hamano, (Fri Apr 16, 9:56 am)
Re: Possible bug in Git, Thomas Rast, (Fri Apr 16, 10:00 am)