* libguile/private-options.h (SCM_PRINT_ESCAPE_NEWLINES_P):
* libguile/print.c: Add new escape-newlines print option, defaulting to
on.
(write_character): For newlines, if SCM_PRINT_ESCAPE_NEWLINES_P, then
print them as \n.
(scm_init_print): Refactor print options initialization.
* libguile/private-options.h (SCM_HUNGRY_EOL_ESCAPES_P): New private
option.
* libguile/read.c: Define SCM_HUNGRY_EOL_ESCAPES_P, defaulting to #f.
(skip_intraline_whitespace): New helper.
(scm_read_string): If SCM_HUNGRY_EOL_ESCAPES_P,
skip_intraline_whitespace after an escaped EOL.
* test-suite/tests/reader.test ("read-options"): Add test.
* libguile/eval.c:
* libguile/debug.c (scm_debug_opts): Move here, from eval.c. Change
SCM_BACKTRACE_P to 1, initially.
* libguile/private-options.h: Make all options vars private.
* libguile/private-options.h (SCM_ELISP_VECTORS_P, SCM_ESCAPED_PARENS_P):
* libguile/read.c (scm_read_opts): Remove unused elisp-vectors option,
and the elisp-strings option (which allowed \( and \) escapes in
strings).
(scm_read_string): Remove the elisp-strings case.
* doc/ref/api-options.texi (Reader options): Update, and update wording
of the case-insensitive bit.
When compiled with SCM_ENABLE_ELISP undefined, the reader options
macros SCM_R6RS_ESCAPES_P and SCM_SQUARE_BRACKETS_P point past
the end of the scm_read_opts struct.
*libguile/private-options.h (SCM_R6RS_ESCAPES_P) [!SCM_ENABLE_ELISP]: modified
(SCM_SQUARE_BRACKETS_P) [!SCM_ENABLE_ELISP]: modified
(SCM_N_READ_OPTIONS): modified
* libguile/private-options.h:
* libguile/read.c (scm_read_opts, SCM_SQUARE_BRACKETS_P): Add an option
for treating [ and ] as parentheses, on by default. Note that this
makes them delimiters also, so [ and ] cannot appear in a symbol name,
with this read option on.
(scm_read_sexp): If we start with [, we end with ].
(scm_read_expression): Add case for [.
This adds a reader option 'r6rs-hex-escapes that modifies the
behavior of numeric escapes in characters and strings. When enabled,
variable-length character hex escapes (#\xNNN) are allowed and become
the default output format for numerically-escaped characters. Also,
string hex escapes switch to a semicolon terminated hex escape (\xNNNN;).
* libguile/print.c (PRINT_CHAR_ESCAPE): new macro
(iprin1): use new macro PRINT_CHAR_ESCAPE
* libguile/private-options.h (SCM_R6RS_ESCAPES_P): new #define
* libguile/read.c (scm_read_opts): add new option r6rs-hex-escapes
(SCM_READ_HEX_ESCAPE): modify to take a terminator parameter
(scm_read_string): parse R6RS hex string escapes
(scm_read_character): parse R6RS hex character escapes
* test-suite/tests/chars.test (with-read-options): new procedure
(R6RS hex escapes): new tests
* test-suite/tests/strings.test (with-read-options): new procedure
(R6RS hex escapes): new tests
