Scrollbar on fixed column about nvim-scrollview

[dstein64]

@YodaEmbedding, thanks for the idea!

This is now implemented (23fdffb).

After updating the plugin, the g:scrollview_base and g:scrollview_column variables can be used to control the scrollbar placement. The base specifies where the scrollbar is anchored. This can be 'left', 'right', or 'buffer'. 'left' and 'right' anchor the scrollbar at the corresponding window edge ('right' is the default value). 'buffer' anchors the scrollbar to the buffer. g:scrollview_column specifies the position (1-indexed) relative to the base.

The following settings correspond to the example you gave ("scrollbar to always appear on a fixed column, e.g. at 80 characters").

let g:scrollview_base = 'buffer'  " or 'left' to position relative to window edge
let g:scrollview_column = 80

[dstein64]

@YodaEmbedding, thanks again! I hadn't considered that.

It's now possible to configure scrollview's settings specifically per-window, per-tab, and/or per-buffer, in addition to globally.

For example, let w:scrollview_base = 'buffer' would apply only for the window it's defined in. let b:scrollview_base = 'left' would apply only for the buffer.

98bd3e5

[YodaEmbedding]

Using g: makes it difficult to set per-buffer. For example, consider a vim help window (80 columns) and a python file (79 columns) open in two split windows.

Perhaps better is b: so that users can set per filetype:

autocmd FileType python let b:scrollview_column=79 | let b:scrollview_base = 'buffer'
autocmd FileType rust   let b:scrollview_column=80 | let b:scrollview_base = 'buffer'

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An alternative method of configuration is to depend on the buffer's colorcolumn:

let g:scrollview_column = 'colorcolumn'  "  default

...though with multi-colorcolumns, the correct choice is undefined -- and requires manual control with b:scrollview_column.