* bug#71407: 30.0.50; Support arrays in json-ts-mode's imenu support
@ 2024-06-07 7:16 Tassilo Horn
0 siblings, 0 replies; only message in thread
From: Tassilo Horn @ 2024-06-07 7:16 UTC (permalink / raw)
To: 71407
json-ts-mode adds imenu support for JSON files which is quite handy.
However, it doesn't support arrays (e.g., [...]) which reduces its
utility quite a bit.
Here is an example JSON file with an array:
--8<---------------cut here---------------start------------->8---
{
"root": [
{
"foo": 1,
"bar": "test1"
},
{
"foo": 2,
"bar": "test2"
}
]
}
--8<---------------cut here---------------end--------------->8---
The Imenu *Completions* buffer with imenu-flatten set to t is:
--8<---------------cut here---------------start------------->8---
Click or type M-RET on a completion to select it.
Type M-<down> or M-<up> to move point between completions.
6 possible completions:
*Rescan* root:. root:bar
root:foo
--8<---------------cut here---------------end--------------->8---
Aha aha, 6 completions but only 4 are displayed because root:foo and
root:bar are basically there twice:
--8<---------------cut here---------------start------------->8---
imenu--index-alist is a variable defined in ‘imenu.el’.
Its value is
(("root" (" " . #<marker at 5 in test.json>)
("foo" . #<marker at 27 in test.json>)
("bar" . #<marker at 43 in test.json>)
("foo" . #<marker at 77 in test.json>)
("bar" . #<marker at 93 in test.json>)))
Local in buffer test.json; global value is nil
--8<---------------cut here---------------end--------------->8---
Well, but even if they were displayed twice, I wouldn't be able to know
which leads to the first and which to the second object's foo or bar.
In an ideal world, arrays would produce numerically indexed intermediate
nodes, e.g., I would have
root:[0]:foo
root:[0]:bar
root:[1]:foo
root:[1]:bar
Is that feasible? AFAICS, the only Imenu thing json-ts-mode does is
defining
;; Imenu.
(setq-local treesit-simple-imenu-settings
'((nil "\\`pair\\'" nil nil)))
In GNU Emacs 30.0.50 (build 17, x86_64-pc-linux-gnu, GTK+ Version
3.24.42, cairo version 1.18.0) of 2024-06-07 built on thinkpad-t440p
Repository revision: 6906ed28f1b4ac0cf0a2a725e7402290f33c26e2
Repository branch: master
System Description: Arch Linux
Configured using:
'configure --with-tree-sitter --with-pgtk --with-modules'
Configured features:
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2024-06-07 7:16 bug#71407: 30.0.50; Support arrays in json-ts-mode's imenu support Tassilo Horn
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