+2007-12-25 Paul Eggert <eggert@cs.ucla.edu>
+ Bruno Haible <bruno@clisp.org>
+
+ Avoid using the syntax symbol() in formatted documentation.
+ * MODULES.html.sh (func_module): When replacing symbol() with a
+ hyperlink, remove the parentheses. Show an error if some remain.
+ Recognize and render the '...' syntax.
+ * doc/alloca-opt.texi: Remove parentheses from symbol reference.
+ Rework. Add paragraph about GCC's inlining.
+ * doc/alloca.texi: Likewise.
+ * doc/error.texi: Remove parentheses from symbol reference.
+ * doc/gnulib-intro.texi: Likewise.
+ * doc/gnulib.texi (alloca, alloca-opt): New nodes.
+ * modules/fnmatch (Description): Reword to say "the ... function".
+ * modules/full-read (Description): Likewise.
+ * modules/full-write (Description): Likewise.
+ * modules/safe-read (Description): Likewise.
+ * modules/safe-write (Description): Likewise.
+ * modules/strchrnul (Description): Likewise.
+ * modules/trim (Description): Likewise.
+ * modules/error (Description): Remove parentheses from symbol
+ references.
+ * modules/verror (Description): Likewise.
+ Reported by Karl Berry.
+
2007-12-25 Bruno Haible <bruno@clisp.org>
Fixup after 2007-10-16 commit.
element='<A HREF="#module='$1'">'$1'</A>'
func_echo "<TD ALIGN=LEFT VALIGN=TOP WIDTH=\"20%\">$element"
+ # Rendering the description:
+ # - Change the symbol() syntax as suitable for documentation, removing the
+ # parentheses (as per GNU standards, section "GNU Manuals").
+ # - Flag the remaining symbol() constructs as errors.
+ # - Change 'xxx' to <CODE>xxx</CODE>.
element=`gnulib-tool --extract-description $1 \
| sed -e "$sed_lt" -e "$sed_gt" -e "$sed_remove_trailing_empty_line" \
- -e 's,^, ,' \
- -e 's,\([^a-zA-Z_]\)'"${posix_functions}"'(),\1<A HREF="'"$POSIX2001_URL"'xsh/\2.html">\2</A>(),g' \
- -e 's,^ ,,'`
+ -e 's,^, ,' -e 's,$, ,' \
+ -e 's,\([^a-zA-Z_]\)'"${posix_functions}"'() \(function\|macro\),\1<A HREF="'"$POSIX2001_URL"'xsh/\2.html">\2</A> \3,g' \
+ -e 's,\([^a-zA-Z_]\)'"${posix_functions}"' \(function\|macro\),\1<A HREF="'"$POSIX2001_URL"'xsh/\2.html">\2</A> \3,g' \
+ -e 's,\([^a-zA-Z_]\)'"${posix_functions}"'(),\1<A HREF="'"$POSIX2001_URL"'xsh/\2.html">\2</A> <SPAN STYLE="color:#FF0000;">what?? If you mean a function\, please say so.</SPAN>,g' \
+ -e 's,\([^a-zA-Z_]\)\([a-zA-Z_][a-zA-Z0-9_]*\)() \(function\|macro\),\1\2 \3,g' \
+ -e 's,\([^a-zA-Z_]\)\([a-zA-Z_][a-zA-Z0-9_]*\)(),\1\2 <SPAN STYLE="color:#FF0000;">what?? If you mean a function\, please say so.</SPAN>,g' \
+ -e 's, '"'"'\([a-zA-Z0-9_ -]*\)'"'"'\([^a-zA-Z0-9_]\), <CODE>\1</CODE>\2,g' \
+ -e 's,^ ,,' -e 's, $,,'`
func_echo "<TD ALIGN=LEFT VALIGN=TOP WIDTH=\"80%\">$element"
func_end TR
@c Documentation of gnulib module 'alloca-opt'.
-@c Copyright (C) 2004 Free Software Foundation, Inc.
+@c Copyright (C) 2004, 2007 Free Software Foundation, Inc.
@c Permission is granted to copy, distribute and/or modify this document
@c under the terms of the GNU Free Documentation License, Version 1.2 or
@c Texts. A copy of the license is included in the ``GNU Free
@c Documentation License'' file as part of this distribution.
-The alloca-opt module provides for a function alloca() which allocates memory
-on the stack, where the system allows it. A memory block allocated with alloca()
-exists only until the function that calls alloca() returns or exits abruptly.
+The alloca-opt module provides for a function @code{alloca} which allocates
+memory on the stack, where the system allows it. A memory block allocated with
+@code{alloca} exists only until the function that calls @code{alloca} returns
+or exits abruptly.
There are a few systems where this is not possible: HP-UX systems, and some
-other platforms when the C++ compiler is used. On these platforms the alloca-opt
-module provides no replacement, just a preprocessor macro HAVE_ALLOCA.
+other platforms when the C++ compiler is used. On these platforms the
+alloca-opt module provides no replacement, just a preprocessor macro
+HAVE_ALLOCA.
-The user can #include <alloca.h> on all platforms, and use alloca() on those
-platforms where the preprocessor macro HAVE_ALLOCA evaluates to true. If
-HAVE_ALLOCA is false, the code should use a heap-based memory allocation
-based on malloc() or - in C++ - 'new'. Note that the #include <alloca.h> must be
-the first one after the autoconf-generated config.h. Thanks to AIX for this nice
-restriction!
+The user can @code{#include <alloca.h>} on all platforms, and use
+@code{alloca} on those platforms where the preprocessor macro HAVE_ALLOCA
+evaluates to true. If HAVE_ALLOCA is false, the code should use a heap-based
+memory allocation based on @code{malloc} or - in C++ - @code{new}. Note that
+the @code{#include <alloca.h>} must be the first one after the
+autoconf-generated @file{config.h}, for AIX 3 compatibility. Thanks to IBM for
+this nice restriction!
+
+Note that GCC 3.1 and 3.2 can @emph{inline} functions that call @code{alloca}.
+When this happens, the memory blocks allocated with @code{alloca} will not be
+freed until @emph{the end of the calling function}. If this calling function
+runs a loop calling the function that uses @code{alloca}, the program easily
+gets a stack overflow and crashes. To protect against this compiler behaviour,
+you can mark the function that uses @code{alloca} with the following attribute:
+
+@smallexample
+#ifdef __GNUC__
+__attribute__ ((__noinline__))
+#endif
+@end smallexample
@c Documentation of gnulib module 'alloca'.
-@c Copyright (C) 2004 Free Software Foundation, Inc.
+@c Copyright (C) 2004, 2007 Free Software Foundation, Inc.
@c Permission is granted to copy, distribute and/or modify this document
@c under the terms of the GNU Free Documentation License, Version 1.2 or
@c Texts. A copy of the license is included in the ``GNU Free
@c Documentation License'' file as part of this distribution.
-The alloca module provides for a function alloca() which allocates memory
-on the stack, where the system allows it. A memory block allocated with alloca()
-exists only until the function that calls alloca() returns or exits abruptly.
+The alloca module provides for a function @code{alloca} which allocates
+memory on the stack, where the system allows it. A memory block allocated with
+@code{alloca} exists only until the function that calls @code{alloca} returns
+or exits abruptly.
There are a few systems where this is not possible: HP-UX systems, and some
other platforms when the C++ compiler is used. On these platforms the alloca
-module provides a malloc() based emulation. This emulation will not free a
+module provides a @code{malloc} based emulation. This emulation will not free a
memory block immediately when the calling function returns, but rather will
-wait until the next alloca() call from a function with the same or a shorter
-stack length. Thus, in some cases, a few memory blocks will be kept although
-they are not needed any more.
+wait until the next @code{alloca} call from a function with the same or a
+shorter stack length. Thus, in some cases, a few memory blocks will be kept
+although they are not needed any more.
-The user can #include <alloca.h> and use alloca() on all platforms. Note
-that the #include <alloca.h> must be the first one after the autoconf-generated
-config.h. Thanks to AIX for this nice restriction!
+The user can @code{#include <alloca.h>} and use @code{alloca} on all platforms.
+Note that the @code{#include <alloca.h>} must be the first one after the
+autoconf-generated @file{config.h}, for AIX 3 compatibility. Thanks to IBM for
+this nice restriction!
-An alternative to this module is the 'alloca-opt' module.
+Note that GCC 3.1 and 3.2 can @emph{inline} functions that call @code{alloca}.
+When this happens, the memory blocks allocated with @code{alloca} will not be
+freed until @emph{the end of the calling function}. If this calling function
+runs a loop calling the function that uses @code{alloca}, the program easily
+gets a stack overflow and crashes. To protect against this compiler behaviour,
+you can mark the function that uses @code{alloca} with the following attribute:
+
+@smallexample
+#ifdef __GNUC__
+__attribute__ ((__noinline__))
+#endif
+@end smallexample
+
+An alternative to this module is the @samp{alloca-opt} module.
specify using the @code{progname} module.
Additionally, using the @code{progname} module is not something that
-can be done implicitly. It requires that every @code{main()} function
+can be done implicitly. It requires that every @code{main} function
be modified to set @code{program_name} as one of its first actions.
Similarly, Gnulib has a facility for executing a command in a
subprocess. It is at the same time a portability enhancement (it
works on GNU, Unix, and Windows, compared to the classical
-@code{fork()}/@code{exec()} which is not portable to Windows), as well
+@code{fork}/@code{exec} idiom which is not portable to Windows), as well
as an application aid: it takes care of redirecting stdin and/or
stdout if desired, and emits an error message if the subprocess
failed.
@subsection Interfaces to external libraries
Examples are the @samp{iconv} module, which interfaces to the
-@code{iconv()} facility, regardless whether it is contained in libc or in
+@code{iconv} facility, regardless whether it is contained in libc or in
an external @code{libiconv}. Or the @samp{readline} module, which
interfaces to the GNU readline library.
@chapter Particular Modules
@menu
+* alloca::
+* alloca-opt::
* Quoting::
* error and progname::
* gcd::
* Supporting Relocation::
@end menu
+@node alloca
+@section alloca
+@findex alloca
+@include alloca.texi
+
+@node alloca-opt
+@section alloca-opt
+@findex alloca
+@include alloca-opt.texi
+
@include quote.texi
@include error.texi
@include gcd.texi
Description:
-error() and error_at_line() functions: Error reporting.
+error and error_at_line functions: Error reporting.
Notice:
If you are using GNU gettext version 0.16.1 or older, add the following options
Description:
-GNU fnmatch() implementation.
+GNU implementation of the fnmatch() function.
Files:
lib/fnmatch.in.h
Description:
-An interface to read() that reads all it is asked to read.
+An interface to the read() function that reads all it is asked to read.
Files:
lib/full-read.h
Description:
-An interface to write() that writes all it is asked to write.
+An interface to the write() function that writes all it is asked to write.
Files:
lib/full-write.h
Description:
-An interface to read() that retries after interrupts.
+An interface to the read() function that retries after interrupts.
Files:
lib/safe-read.h
Description:
-An interface to write() that retries after interrupts.
+An interface to the write() function that retries after interrupts.
Files:
lib/safe-write.h
Description:
-strchrnul(): Find the first occurrence of C in S or the final NUL byte.
+strchrnul() function: Find the first occurrence of C in S or the final NUL
+byte.
Files:
lib/strchrnul.c
Description:
-trim() removes leading and/or trailing whitespaces
+trim() function: remove leading and/or trailing whitespaces
Files:
lib/trim.h
Description:
-verror() and verror_at_line() functions: Error reporting with va_list.
+verror and verror_at_line functions: Error reporting with va_list.
Notice:
If you are using GNU gettext version 0.16.1 or older, add the following options
projects / pspp / commitdiff