patch 9.0.1958: cannot complete option values Commit: https://github.com/vim/vim/commit/900894b09a95398dfc75599e9f0aa2ea25723384 Author: Yee Cheng Chin <ychin.git@gmail.com> Date: Fri Sep 29 20:42:32 2023 +0200 patch 9.0.1958: cannot complete option values Problem: cannot complete option values Solution: Add completion functions for several options Add cmdline tab-completion for setting string options Add tab-completion for setting string options on the cmdline using `:set=` (along with `:set+=` and `:set-=`). The existing tab completion for setting options currently only works when nothing is typed yet, and it only fills in with the existing value, e.g. when the user does `:set diffopt=<Tab>` it will be completed to `set diffopt=internal,filler,closeoff` and nothing else. This isn't too useful as a user usually wants auto-complete to suggest all the possible values, such as 'iblank', or 'algorithm:patience'. For set= and set+=, this adds a new optional callback function for each option that can be invoked when doing completion. This allows for each option to have control over how completion works. For example, in 'diffopt', it will suggest the default enumeration, but if `algorithm:` is selected, it will further suggest different algorithm types like 'meyers' and 'patience'. When using set=, the existing option value will be filled in as the first choice to preserve the existing behavior. When using set+= this won't happen as it doesn't make sense. For flag list options (e.g. 'mouse' and 'guioptions'), completion will take into account existing typed values (and in the case of set+=, the existing option value) to make sure it doesn't suggest duplicates. For set-=, there is a new `ExpandSettingSubtract` function which will handle flag list and comma-separated options smartly, by only suggesting values that currently exist in the option. Note that Vim has some existing code that adds special handling for 'filetype', 'syntax', and misc dir options like 'backupdir'. This change preserves them as they already work, instead of converting to the new callback API for each option. closes: #13182 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Yee Cheng Chin <ychin.git@gmail.com>

" Vim indent file
" Language:    Hamster Script 
" Version:     2.0.6.1
" Last Change: 2021 Oct 11
" Maintainer:  David Fishburn <dfishburn dot vim at gmail dot com>
" Download: https://www.vim.org/scripts/script.php?script_id=1099
"
"    2.0.6.1 (Oct 2021)
"        Added b:undo_indent
"        Added cpo check
"

" Only load this indent file when no other was loaded.
if exists("b:did_indent")
  finish
endif
let b:did_indent = 1

setlocal indentkeys+==~if,=~else,=~endif,=~endfor,=~endwhile
setlocal indentkeys+==~do,=~until,=~while,=~repeat,=~for,=~loop
setlocal indentkeys+==~sub,=~endsub

let b:undo_indent = "setl indentkeys<"

" Define the appropriate indent function but only once
setlocal indentexpr=HamGetFreeIndent()
if exists("*HamGetFreeIndent")
  finish
endif

let s:keepcpo = &cpo
set cpo&vim

function HamGetIndent(lnum)
  let ind = indent(a:lnum)
  let prevline=getline(a:lnum)

  " Add a shiftwidth to statements following if,  else, elseif,
  " case, select, default, do, until, while, for, start
  if prevline =~? '^\s*\<\(if\|else\%(if\)\?\|for\|repeat\|do\|while\|sub\)\>' 
    let ind = ind + shiftwidth()
  endif

  " Subtract a shiftwidth from else, elseif, end(if|while|for), until
  let line = getline(v:lnum)
  if line =~? '^\s*\(else\|elseif\|loop\|until\|end\%(if\|while\|for\|sub\)\)\>'
    let ind = ind - shiftwidth()
  endif

  return ind
endfunction

function HamGetFreeIndent()
  " Find the previous non-blank line
  let lnum = prevnonblank(v:lnum - 1)

  " Use zero indent at the top of the file
  if lnum == 0
    return 0
  endif

  let ind=HamGetIndent(lnum)
  return ind
endfunction

" Restore:
let &cpo = s:keepcpo
unlet s:keepcpo

" vim:sw=2 tw=80