[Rd] overriding built in Rbuildignore values

[Dirk Eddelbuettel]

On 7 August 2025 at 23:07, Ivan Krylov wrote:
| On Thu, 7 Aug 2025 14:11:08 -0500
| Dirk Eddelbuettel <edd using debian.org> wrote:
| 
| > One suggestion is to use '*.sw[g-p]' to spare .swf files for Flash
| 
| On Unix-like systems (and, empirically, on Windows, despite ':help
| swap-file' says the dots are replaced), Vim prepends a dot to the name
| of the swap file. So how about only matching files that start with a
| dot and end with .sw[certain letters]?
| 
| grepl(
|  '(^|/)[.][^/]+[.]sw[a-p]$',
|  c('.swap.file.swp', 'subdir/.swapfile.swn', 'not-a-swapfile.swc'),
|  perl = TRUE
| )
| # [1]  TRUE TRUE FALSE

Nice. This regexp '(^|/)[.][^/]+[.]sw[a-p]$' is a clear improvement over the
(much) simpler one "\\.sw.$" from my PR (which was mostly about adding
"^(GPATH|GRTAGS|GTAGS)$" for the GNU Global source tagger) as it covers both
top-level and subdirectories and hence avoids hitting *.swf or *.swc files.

I trust you checked that 'perl = TRUE' applies also to these entries from
tools:::get_exclude_patterns() ?

Dirk

-- 
dirk.eddelbuettel.com | @eddelbuettel | edd using debian.org