A snippet with `i(1, "é")` fails with error `index out of range`

[bew]

Hello!

Given I use an insert node as a snippet, with a non-ascii default value..

When I try to expand a snippet I get this error:

E5108: Error executing lua: .../managed-plugins/start/LuaSnip/lua/luasnip/util/util.lua:406: attempt to index local 'offset' (a nil value)
stack traceback:
        .../managed-plugins/start/LuaSnip/lua/luasnip/util/util.lua:406: in function 'pos_from_offset'
        ...managed-plugins/start/LuaSnip/lua/luasnip/nodes/util.lua:1017: in function 'restore_cursor_pos_relative'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:206: in function 'node_update_dependents_preserve_position'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:319: in function 'update_dependents'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:336: in function '_active_update_dependents'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:539: in function '_snip_expand'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:581: in function 'fn'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:51: in function 'expand'
        ...ew/.config/nvim-wip/lua/mycfg/plugs_for_file_editing.lua:557: in function <...ew/.config/nvim-wip/lua/mycfg/plugs_for_file_editing.lua:556>

Then when I dismiss the error I see that the snippet was actually inserted into the buffer, but the mode is still insert (instead of select), and the cursor is located at the beginning of the snippet.
Also when the node is not the first tabstop, I don't get any error but the behavior isn't better..

(note: initially discovered this trying to use … (ellipsis character), but it looks like é triggers the issue as well so it might be generalized)

[leiserfg]

Can you share the full snippet?

[hinell]

I wonder if this project is maintained at all at this point.

[leiserfg]

I fail to see how this question is helpful @hinell, is there is not working well for you? Are there features missing that you will like to have? A project does not need to be updated all the time to be maintained.

[bew]

Can you share the full snippet?

Actually I have 2 different errors.

With this snippet:

ls.add_snippets("all", { ls.snippet({ trig="bad" }, { ls.insert_node(1, "é") }) })

I get the above error.

But with this snippet: (the unicode 3-dots char)

ls.add_snippets("all", { ls.snippet({ trig="bad" }, { ls.insert_node(1, "…") }) })

I get this following error:

E5108: Error executing lua: ...p/managed-plugins/start/LuaSnip/lua/luasnip/util/str.lua:183: index out of range
stack traceback:
        [C]: in function 'str_byteindex'
        ...p/managed-plugins/start/LuaSnip/lua/luasnip/util/str.lua:183: in function 'multiline_to_byte_offset'
        ...managed-plugins/start/LuaSnip/lua/luasnip/nodes/util.lua:956: in function 'store_cursor_node_relative'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:177: in function 'node_update_dependents_preserve_position'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:319: in function 'update_dependents'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:336: in function '_active_update_dependents'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:539: in function '_snip_expand'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:581: in function 'fn'
        ...m-wip/managed-plugins/start/LuaSnip/lua/luasnip/init.lua:51: in function 'expand'
        ...ew/.config/nvim-wip/lua/mycfg/plugs_for_file_editing.lua:559: in function <...ew/.config/nvim-wip/lua/mycfg/plugs_for_file_editing.lua:558>

[leiserfg]

I can't reproduce it, both work fine for me, can you share a minimal config where the error happens?

[leiserfg]

Also, can you check if :set fileencoding in that file echoes fileencoding=utf-8, to discard any encoding issue.

[bew]

I can't reproduce it, both work fine for me, can you share a minimal config where the error happens?

Indeed I've found the cause, I was using the self-dependent-dNode branch from #1137, on master it works well.
Sorry for the noise 😬