Citation completion not working on windows unless full ~/textmf/bibtex/bib/... path is specified

[lyeoh]

Description

I'm not sure if it's just my setup or which versions of kpsewhich are doing this but as of kpathsea version 6.3.3, the absolute paths that kpsewhich returns can have a lowercase drive letter on windows. Then vimtex#kpsewhich#find thinks this is a relative path and prepends l:root to it.

Steps to reproduce

1. nvim -u minimal.vim minimal.tex
2. :VimtexCompile
3. enter insert mode in the \cite command \cite{citeke|}
4. attempt citation completion with <C-X><C-O>

minimal.tex

\documentclass{article}
\begin{document}
\cite{citeke}
\bibliographystyle{unsrt}
\bibliography{minimal}
% \bibliography{C:/Users/luke/texmf/bibtex/bib/minimal.bib}
\end{document}

minimal.vim

set nocompatible
let &runtimepath  = '~/AppData/Local/nvim/plugged/vimtex,' . &runtimepath
let &runtimepath .= ',~/AppData/Local/nvim/plugged/vimtex/after'
filetype plugin indent on
syntax enable

~\texmf\bibtex\bib\minimal.bib

@article{citekey,
  title = {Title},
  author = {Author},
  year = {Year},
  journal = {Journal},
}

Expected behavior

citeke completes to citekey

Actual behavior

• No completion takes place, with the error message Pattern not found.
• :echo vimtex#bib#files() returns []
• :echo vimtex#kpsewhich#find('minimal.bib') returns C:\Users\luke\Downloads\issue/c:Users/luke/texmf/bibtex/bib/minimal.bib
• :echo vimtex#jobs#capture('kpsewhich minimal.bib') returns ['c:/Users/luke/texmf/bibtex/bib/minimal.bib']

Do you use a latexmkrc file?

No

VimtexInfo

System info:
  OS: WINDOUGH (Microsoft Windows 10 Education)
  Vim version: NVIM v0.4.4
  Has clientserver: true
  Servername: \\.\pipe\nvim-60692-0

VimTeX project: minimal
  base: minimal.tex
  root: C:\Users\luke\Downloads\issue
  tex: C:\Users\luke\Downloads\issue\minimal.tex
  main parser: current file verified
  document class: article
  compiler: latexmk
    engine: -pdf
    options:
      -verbose
      -file-line-error
      -synctex=1
      -interaction=nonstopmode
    callback: 1
    continuous: 1
    executable: latexmk
    job: 
      jobid: 5
      output: C:\Users\luke\AppData\Local\Temp\nvimOclcoH\0
      cmd: set max_print_line=2000 & latexmk -verbose -file-line-error -synctex=1 -interaction=nonstopmode -pdf -pvc -view=none -e "$compiling_cmd = ($compiling_cmd ? $compiling_cmd . ' ^& ' : '') . 'echo vimtex_compiler_callback_compiling'" -e "$success_cmd = ($success_cmd ? $success_cmd . ' ^& ' : '') . 'echo vimtex_compiler_callback_success'" -e "$failure_cmd = ($failure_cmd ? $failure_cmd . ' ^& ' : '') . 'echo vimtex_compiler_callback_failure'" "minimal.tex"
      pid: 64744
  viewer: General
    job: 
      pid: 51580
      cmd: SumatraPDF -reuse-instance -forward-search "C:\Users\luke\Downloads\issue\minimal.tex" 1 "C:\Users\luke\Downloads\issue/minimal.pdf"
  qf method: LaTeX logfile

[lervag]

Interesting issue. Before I look into it more closely, why do you want to put the bib file under your texmf tree? If you put it in the project root, things should work as expected. I guess it is because you share a reference file between projects?

The reason it fails is probably because of these lines:

vimtex/autoload/vimtex/paths.vim

Lines 40 to 44 in 9c20323

	function! vimtex#paths#is_abs(path) abort " {{{1
	return a:path =~# s:re_abs
	endfunction
	" }}}1

vimtex/autoload/vimtex/paths.vim

Line 101 in 9c20323

let s:re_abs = has('win32') ? '^[A-Z]:[\\/]' : '^/'

[lyeoh]

Yeah I have a global bib file for short one-off notes. Do you think we can just change s:re_abs to allow for lowercase drive letters? I'm not sure if passing on such a path might fail somewhere else.

[lervag]

Sure, let's try that. I don't really use Windows, so please let me know if this breaks anything unexpectedly.