Submodules seems to be erroring

[muschellij2]

May be related to #233, but I'm getting errors for submodules it seems:

remotes::install_github("ANTsX/ANTsR")
#> Downloading GitHub repo ANTsX/ANTsR@master
#> Error in info[!to_ignore, ]: incorrect number of dimensions
> traceback()
# 5: update_submodules(source, quiet)
# 4: FUN(X[[i]], ...)
# 3: vapply(remotes, install_remote, ..., FUN.VALUE = character(1))
# 2: install_remotes(remotes, auth_token = auth_token, host = host, 
#        dependencies = dependencies, upgrade = upgrade, force = force, 
#        quiet = quiet, build = build, build_opts = build_opts, repos = repos, 
#        type = type, ...)
# 1: remotes::install_github("ANTsX/ANTsR")
sessioninfo::session_info()
#> ─ Session info ──────────────────────────────────────────────────────────
#>  setting  value                       
#>  version  R version 3.5.1 (2018-07-02)
#>  os       macOS Sierra 10.12.6        
#>  system   x86_64, darwin15.6.0        
#>  ui       X11                         
#>  language (EN)                        
#>  collate  en_US.UTF-8                 
#>  ctype    en_US.UTF-8                 
#>  tz       America/New_York            
#>  date     2018-11-03                  
#> 
#> ─ Packages ──────────────────────────────────────────────────────────────
#>  package     * version date       lib source                      
#>  assertthat    0.2.0   2017-04-11 [1] CRAN (R 3.5.0)              
#>  backports     1.1.2   2017-12-13 [1] CRAN (R 3.5.0)              
#>  cli           1.0.1   2018-09-25 [1] CRAN (R 3.5.0)              
#>  crayon        1.3.4   2017-09-16 [1] CRAN (R 3.5.0)              
#>  curl          3.2     2018-03-28 [1] CRAN (R 3.5.0)              
#>  digest        0.6.18  2018-10-10 [1] CRAN (R 3.5.0)              
#>  evaluate      0.12    2018-10-09 [1] CRAN (R 3.5.0)              
#>  htmltools     0.3.6   2017-04-28 [1] CRAN (R 3.5.0)              
#>  knitr         1.20    2018-09-21 [1] Github (yihui/knitr@0da648b)
#>  magrittr      1.5     2014-11-22 [1] CRAN (R 3.5.0)              
#>  Rcpp          0.12.19 2018-10-01 [1] CRAN (R 3.5.1)              
#>  remotes       2.0.2   2018-10-30 [1] CRAN (R 3.5.1)              
#>  rmarkdown     1.10    2018-06-11 [1] CRAN (R 3.5.0)              
#>  rprojroot     1.3-2   2018-01-03 [1] CRAN (R 3.5.0)              
#>  sessioninfo   1.1.0   2018-09-25 [1] CRAN (R 3.5.0)              
#>  stringi       1.2.4   2018-07-20 [1] CRAN (R 3.5.0)              
#>  stringr       1.3.1   2018-05-10 [1] CRAN (R 3.5.0)              
#>  withr         2.1.2   2018-03-15 [1] CRAN (R 3.5.0)              
#>  yaml          2.2.0   2018-07-25 [1] CRAN (R 3.5.0)              
#> 
#> [1] /Library/Frameworks/R.framework/Versions/3.5/Resources/library

^{Created on 2018-11-03 by the reprex package (v0.2.1)}

[muschellij2]

This error occurs when .gitmodules exists but is empty.

[muschellij2]

Easier example:

tdir = tempfile()
dir.create(tdir)
files = c(".gitmodules", ".Rbuildignore")
files = file.path(tdir, files)
file.create(files)
#> [1] TRUE TRUE
remotes:::update_submodules(source = tdir, quiet = TRUE)
#> Error in info[!to_ignore, ]: incorrect number of dimensions
sessioninfo::session_info()
#> ─ Session info ──────────────────────────────────────────────────────────
#>  setting  value                       
#>  version  R version 3.5.1 (2018-07-02)
#>  os       macOS Sierra 10.12.6        
#>  system   x86_64, darwin15.6.0        
#>  ui       X11                         
#>  language (EN)                        
#>  collate  en_US.UTF-8                 
#>  ctype    en_US.UTF-8                 
#>  tz       America/New_York            
#>  date     2018-11-06                  
#> 
#> ─ Packages ──────────────────────────────────────────────────────────────
#>  package     * version date       lib source                      
#>  assertthat    0.2.0   2017-04-11 [1] CRAN (R 3.5.0)              
#>  backports     1.1.2   2017-12-13 [1] CRAN (R 3.5.0)              
#>  cli           1.0.1   2018-09-25 [1] CRAN (R 3.5.0)              
#>  crayon        1.3.4   2017-09-16 [1] CRAN (R 3.5.0)              
#>  digest        0.6.18  2018-10-10 [1] CRAN (R 3.5.0)              
#>  evaluate      0.12    2018-10-09 [1] CRAN (R 3.5.0)              
#>  htmltools     0.3.6   2017-04-28 [1] CRAN (R 3.5.0)              
#>  knitr         1.20    2018-09-21 [1] Github (yihui/knitr@0da648b)
#>  magrittr      1.5     2014-11-22 [1] CRAN (R 3.5.0)              
#>  Rcpp          0.12.19 2018-10-01 [1] CRAN (R 3.5.1)              
#>  remotes       2.0.2   2018-10-30 [1] CRAN (R 3.5.0)              
#>  rmarkdown     1.10    2018-06-11 [1] CRAN (R 3.5.0)              
#>  rprojroot     1.3-2   2018-01-03 [1] CRAN (R 3.5.0)              
#>  sessioninfo   1.1.0   2018-09-25 [1] CRAN (R 3.5.0)              
#>  stringi       1.2.4   2018-07-20 [1] CRAN (R 3.5.0)              
#>  stringr       1.3.1   2018-05-10 [1] CRAN (R 3.5.0)              
#>  withr         2.1.2   2018-03-15 [1] CRAN (R 3.5.0)              
#>  yaml          2.2.0   2018-07-25 [1] CRAN (R 3.5.0)              
#> 
#> [1] /Library/Frameworks/R.framework/Versions/3.5/Resources/library

^{Created on 2018-11-06 by the reprex package (v0.2.1)}