> On Nov 23, 2022, at 9:54 PM, Tassilo Horn <tsdh@gnu.org> wrote: > > Yuan Fu <casouri@gmail.com> writes: > > Hi Yuan, > >>> So: am I supposed to install tree-sitter from github or from debian's >>> package manager? >> >> Either should be fine. > > Ah, I was wondering the same when I wanted to give tree-sitter a try. I > have tree-sitter 0.20.7 installed but the configure output said > ">=0.20.2 no" but only reported a >= 0.6.x version. It still works > fine. :-) > >>> I first did the package-manager version, then pulled from github and >>> installed that -- configure shows that tree-sitter is detected -- but >>> calling any of the tree-sitter modes, eg c-ts-mode barfs with an >>> error saying that support is not available. >> >> If you call tree-sitter-available-p, what do you get? Most likely you >> donât have the relevant language definition/grammar for those >> modes. You can probably find them on package managers, or you can >> build with the script here: > > Indeed, that was the next trap I fell in. On Arch, tree-sitter is in > the community repository (so basically almost official) whereas the > language definitions are only on the AUR. Maybe the NEWS entry should > tell more clearly that tree-sitter needs to be system-installed and also > the language definitions need to be grabbed somewhere. Yeah there will be a NEWS entry for tree-sitter. > > BTW, how can a user decide that tree-sitter modes should be used? For > example, when I open a json file I get js-json-mode, not json-ts-mode, > which also works, so support is available. Should user's augment > auto-mode-alist? Or is there some "enable TS whenever possible and the > devs think its support is in a usable state for that language" toggle? There is no global toggle, unfortunately. You could use auto-mode-alist or major-mode-remap-alist to enable tree-sitter modes, yes. I imagine there could be a third-party package that automatically enables tree-sitter for all supported nodes, maybe. Yuan
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