# How does format-patch determine the filename of the patch? 5 messages from 2009-10-15 to 2009-10-29. Participants: Timur Tabi, Thomas Rast, Robin Rosenberg, Joshua Roys. Thread: https://gitlist.dev/t/21249 ## Timur Tabi, 2009-10-15 16:17 Subject: How does format-patch determine the filename of the patch? Message-ID: URL: https://gitlist.dev/e/ed82fe3e0910150917u72ef189epc74411e71a9cd2d4%40mail.gmail.com ``` Hi. I'm not familiar with the git source code, so forgive me if this is a dumb question. I'm trying to determine the algorithm that git-format-patch uses to determine the name of the patch file it creates (e.g. "0001-this-is-my-patch-without-spaces-and-trunca.patch") I'm looking at the function cmd_format_patch(), and I just don't see where it creates any files. Can someone show me where this code is? The reason I ask is that I'm writing a script which calls git-format-patch to create some patches for post-processing. So I need the name of the file that git-format-patch creates so that I can open it and examine it. I'd liked to see if there's a way to get the name of the patch without actually creating the file. -- Timur Tabi Linux kernel developer at Freescale ``` ## Thomas Rast, 2009-10-15 17:48 Subject: Re: How does format-patch determine the filename of the patch? Message-ID: <200910151948.48539.trast@student.ethz.ch> URL: https://gitlist.dev/e/200910151948.48539.trast%40student.ethz.ch In-Reply-To: ``` Timur Tabi wrote: > Hi. I'm not familiar with the git source code, so forgive me if this > is a dumb question. I'm trying to determine the algorithm that > git-format-patch uses to determine the name of the patch file it > creates (e.g. "0001-this-is-my-patch-without-spaces-and-trunca.patch") > I'm looking at the function cmd_format_patch(), and I just don't see > where it creates any files. Can someone show me where this code is? get_patch_filename() in log-tree.c, but the bulk of the work is done in the call out to format_commit_message() [pretty.c] with the "%f" format, which is in turn handled by format_sanitized_subject() [pretty.c]. -- Thomas Rast trast@{inf,student}.ethz.ch ``` ## Robin Rosenberg, 2009-10-15 17:59 Subject: Re: How does format-patch determine the filename of the patch? Message-ID: <200910151959.47778.robin.rosenberg.lists@dewire.com> URL: https://gitlist.dev/e/200910151959.47778.robin.rosenberg.lists%40dewire.com In-Reply-To: ``` torsdag 15 oktober 2009 18:17:09 skrev Timur Tabi: > Hi. I'm not familiar with the git source code, so forgive me if this > is a dumb question. I'm trying to determine the algorithm that > git-format-patch uses to determine the name of the patch file it > creates (e.g. "0001-this-is-my-patch-without-spaces-and-trunca.patch") > I'm looking at the function cmd_format_patch(), and I just don't see > where it creates any files. Can someone show me where this code is? > > The reason I ask is that I'm writing a script which calls > git-format-patch to create some patches for post-processing. So I > need the name of the file that git-format-patch creates so that I can > open it and examine it. I'd liked to see if there's a way to get the > name of the patch without actually creating the file. It tells you the names on stdout. -- robin ``` ## Timur Tabi, 2009-10-29 13:05 Subject: Re: How does format-patch determine the filename of the patch? Message-ID: URL: https://gitlist.dev/e/ed82fe3e0910290605j302747f9o6a86acb414427639%40mail.gmail.com In-Reply-To: <200910151959.47778.robin.rosenberg.lists@dewire.com> ``` On Thu, Oct 15, 2009 at 12:59 PM, Robin Rosenberg wrote: >> The reason I ask is that I'm writing a script which calls >> git-format-patch to create some patches for post-processing.  So I >> need the name of the file that git-format-patch creates so that I can >> open it and examine it.  I'd liked to see if there's a way to get the >> name of the patch without actually creating the file. > > It tells you the names on stdout. Is there a way for it to tell me the name on stdout *without* actually creating the patch? -- Timur Tabi Linux kernel developer at Freescale ``` ## Joshua Roys, 2009-10-29 13:14 Subject: Re: How does format-patch determine the filename of the patch? Message-ID: <4AE99548.5060100@gmail.com> URL: https://gitlist.dev/e/4AE99548.5060100%40gmail.com In-Reply-To: ``` On 10/29/2009 09:05 AM, Timur Tabi wrote: > On Thu, Oct 15, 2009 at 12:59 PM, Robin Rosenberg > wrote: > >>> The reason I ask is that I'm writing a script which calls >>> git-format-patch to create some patches for post-processing. So I >>> need the name of the file that git-format-patch creates so that I can >>> open it and examine it. I'd liked to see if there's a way to get the >>> name of the patch without actually creating the file. >> >> It tells you the names on stdout. > > Is there a way for it to tell me the name on stdout *without* actually > creating the patch? > Hello, Is there any way you can just save the names from when you do call format-patch? e.g. ... my @filenames = qx(git format-patch $opts); ... Josh ```