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Revamp to fix many (but not all) of the C- and M4-related quoting

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problems.  Among other things, this fixes the Bison bug reported
by Jan Hubicka when processing the Bash grammar.
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Paul Eggert
2002-11-12 07:33:36 +00:00
parent 5b7f88c7f2
commit 7672019c42
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@@ -1,3 +1,73 @@
2002-11-11 Paul Eggert <eggert@twinsun.com>
Revamp to fix many (but not all) of the C- and M4-related quoting
problems. Among other things, this fixes the Bison bug reported
by Jan Hubicka when processing the Bash grammar; see:
<http://mail.gnu.org/pipermail/bison-patches/2002-November/001329.html>
Use new @ escapes consistently. Represent brackets with @{ and @}
rather than @<:@ and @:>@, since this works a bit better with dumb
editors like vi. Represent @ with @@, since @ is now consistently
an escape. Use @oline@ and @ofile@ rather than __oline__ and
__ofile__, to avoid unexpected expansions. Similarly, use @output
rather than #output.
* data/c.m4 (b4_copyright): Omit file name from comment, since
the file name could contain "*/".
(b4_synclines_flag): Don't quote the 2nd argument; it should already
be quoted. All uses changed.
* data/glr.c: Use new @ escapes consistently.
(b4_input_suffix, b4_output_parser_suffix, b4_output_parser_name,
b4_output_header_suffix, b4_output_header_name, b4_header_guard):
Remove, since they couldn't handle arbitrary characters in file
names.
* data/lalr1.cc: Likewise.
* data/yacc.c: Likewise.
* src/files.c (output_infix): Remove; all uses removed.
* src/files.h: Likewise.
* data/glr.c: Remove use of "#ifdef b4_header_guard", since it
mishandled funny characters in file names, and anyway it isn't
needed any more.
* data/yacc.c: Likewise.
* data/lalr1.cc: Use YYSLP_NEEDED instead of b4_header_guard.
* data/glr.c (YYSTYPE_IS_TRIVIAL): Define when the .h file would.
* data/yacc.c: Likewise.
* src/muscle_tab.c: Include quotearg.h, since we need to quote C
strings now.
(muscle_init): Quote filename as a C string.
* src/muscle_tab.h (MUSCLE_GROW_STRING_PAIR): Remove; unused.
(MUSCLE_OBSTACK_SGROW, MUSCLE_INSERT_C_STRING): New macros.
* src/output.c (escaped_file_name_output): New function.
(prepare_symbols): Quote tokens for M4.
(prepare): Don't insert output_infix, output_prefix,
output_parser_name, output_header_name; this is now down by scan-skel.
Insert skeleton as a C string.
* src/output.c (user_actions_output, symbol_destructors_output,
symbol_printers_output): Quote filenames for C and M4.
* src/reader.c (prologue_augment, epilogue_set): Likewise.
* src/scan-gram.l (<SC_CHARACTER>): Don't worry about any backslash
escapes other than \\ and \'; this simplifies the code.
(<SC_STRING>): Likewise, for \\ and \".
(<SC_COMMENT,SC_LINE_COMMENT,SC_STRING,SC_CHARACTER,SC_BRACED_CODE,
SC_PROLOGUE,SC_EPILOGUE>): Escape $ and @, too.
Use new escapes @{ and @} for [ and ].
* src/scan-skel.l (yylineno, yyoutname): Remove static vars, replacing
them with auto vars.
Switch to new escape scheme, where @ is the escape character uniformly.
Abort if a stray escape character is found. Avoid unbounded input
buffer when parsing non-escaped text.
* tests/input.at (Torturing the Scanner): Add tests that @oline@,
__oline__, #output, $@, and @{ do not have unintended meanings.
2002-11-09 Paul Eggert <eggert@twinsun.com> 2002-11-09 Paul Eggert <eggert@twinsun.com>
Fix the test failure due to GCC warnings described in Fix the test failure due to GCC warnings described in