Junio C Hamano <junkio@xxxxxxx> wrote: > "Shawn O. Pearce" <spearce@xxxxxxxxxxx> writes: > > > As a porcelain author I'm finding it difficult to keep track of > > what features I can use in git-gui. Newer versions of Git have > > newer capabilities but they don't always immediately get newer > > version numbers that I can easily test for. > > > > This is a simple plumbing option that lets a porcelain ask the > > plumbing for its capabilities, at which point the porcelain can > > work around anything missing, or recommend to the user that they > > upgrade their plumbing layer. > > > > Signed-off-by: Shawn O. Pearce <spearce@xxxxxxxxxxx> > > --- > > > > Johannes Schindelin <Johannes.Schindelin@xxxxxx> wrote: > > > > > > On Wed, 30 May 2007, Alex Riesen wrote: > > > > > > > git-version --features? > > > > > > Melikes. > > > > Good? > > Hmmm. I am not sure if you want list-features in the features > list -- how are you going to test for it? Yes, its a recursive definition. But its also a feature that won't ever be removed; if list-features is here then the list-features feature is also here. Makes the test in t0000 a lot easier, and its not a huge deal to say "yes, the feature that i implement is here too". ;-) > Also I still do not understand why you want redirect-stderr. > Are you writing for a shell-less environment? The redirect-stderr thing grew out of the MinGW port camp. Apparently they cannot use (or its hard to use) an important little tool called `cat` over there. Why cat? Tcl is so horribly broken that to get data for both stdout and stderr through a pipe I have to do something sick like: git fetch 2>&1 | cat because in Tcl its actually: set rdr [open "| git fetch |& cat" r] The |& means 2>&1| in normal shell. But that means I have to have a process after it to receive the data. Normally that's cat. But MinGW doesn't have cat. (Nor do they have dog, but neither does Linux...). So I need a way to redirect output. Dscho's patch to git.c to give me `git --redirect-stderr` is quite simple, and makes my life in git-gui easier. I can just require that to use git-gui on MinGW you must have the 'redirect-stderr' feature supported in your plumbing layer. On non-MinGW systems I can fallback to "&| cat" if its not supported. -- Shawn. - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
