On 06/06/2019 5:04 p.m., Richard O'Keefe wrote:
How can expanding tildes anywhere but the beginning of a file name NOT be
considered a bug?
It looks like a bug in R, but not necessarily a bug in libreadline: we
may just be using tilde_expand improperly.
Duncan Murdoch
On Thu, 6 Jun 2019 at 23:04, Ivan Krylov <krylov.r...@gmail.com> wrote:
On Wed, 5 Jun 2019 18:07:15 +0200
Frank Schwidom <schwi...@gmx.net> wrote:
+> path.expand("a ~ b")
[1] "a /home/user b"
How can I switch off any file crippling activity?
It doesn't seem to be possible if readline is enabled and works
correctly.
Calls to path.expand [1] end up [2] in R_ExpandFileName [3], which
calls R_ExpandFileName_readline [4], which uses libreadline function
tilde_expand [5]. tilde_expand seems to be designed to expand '~'
anywhere in the string it is handed, i.e. operate on whole command
lines, not file paths.
I am taking the liberty of Cc-ing R-devel in case this can be
considered a bug.
--
Best regards,
Ivan
[1]
https://github.com/wch/r-source/blob/12d1d2d232d84aa355e333348b81180a0e2c6f2f/src/main/names.c#L807
[2]
https://github.com/wch/r-source/blob/12d1d2d232d84aa355e333348b81180a0e2c6f2f/src/main/platform.c#L1915
[3]
https://github.com/wch/r-source/blob/12d1d2d232d84aa355e333348b81180a0e2c6f2f/src/unix/sys-unix.c#L147
[4]
https://github.com/wch/r-source/blob/12d1d2d232d84aa355e333348b81180a0e2c6f2f/src/unix/sys-std.c#L494
[5]
https://git.savannah.gnu.org/cgit/readline.git/tree/tilde.c?h=devel#n187
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