Am Do., 2. Apr. 2020 um 21:05 Uhr schrieb Andy Wingo <wi...@igalia.com>:
> In the concrete case of the SRFI modules, importing e.g. (srfi 9) works > AFAIU. Does this not work for you? > I use Guile 3.9.1. I can do (import (srfi srfi-9)), but I can't do (import (srfi 9)). That latter yields the error: source expression failed to match any pattern in form (srfi 9). > > I think that allowing numbers as module name components, beyond the SRFI > modules, is not currently a good idea for Guile. I had a look at it and > it's a bit too intrusive. If numbers are not allowed, Guile will be severely crippled with respect to R7RS code. Most SRFIs are distributed under the name `(srfi NNN)' so many R7RS programs intended to be portable will try to import libraries of the form, say `(srfi 9)' and Guile would complain. `cond-expand' is not helpful here in general as an R7RS top-level program has to start with an import and cannot start with some `(cond-expand (guile ...))'. (Besides, `cond-expand' has its own problems: https://lists.gnu.org/archive/html/bug-guile/2020-03/msg00097.html). As a quick-and-dirty workaround, I would suggest that the Guiles (syntax-case?) parser of library names accepts numbers as module name components but treats them internally as symbols (say, by prefixing them with a colon) so that the main module code doesn't have to be touched. The locator for library code in the file system will then have to look for a filenname with a colon and without. Marc > > Andy > > On Wed 01 Apr 2020 12:47, Marc Nieper-Wißkirchen <marc.nie...@gmail.com> > writes: > > > An R7RS library name consists of parts, where each part is either a > symbol or > > a non-negative exact integer. Guile doesn't support the latter ones. > > > > This is unfortunate as the implementation of a SRFI NNN is usually > delivered > > in form of a library named (srfi NNN). > > > > When this is corrected, for interoperability, it would be great if Guile > offers > > the included SRFIs not only under the name (srfi srfi-NNN) but also under > > (srfi NNN). > > > > Thanks, > > > > Marc >
