From 5557b83bc8ba13093b1a27956308f1523eb96392 Mon Sep 17 00:00:00 2001 From: "Richard M. Stallman" Date: Tue, 18 Apr 2000 21:27:18 +0000 Subject: [PATCH] *** empty log message *** --- lispref/elisp.texi | 18 ++++++++++++++ lispref/files.texi | 56 ++++++++++++++++++++++++++----------------- lispref/nonascii.texi | 47 ++++++++++++++++++++---------------- lispref/os.texi | 14 +++++++++++ 4 files changed, 92 insertions(+), 43 deletions(-) diff --git a/lispref/elisp.texi b/lispref/elisp.texi index b23bba247f5..5f4f6e2fc09 100644 --- a/lispref/elisp.texi +++ b/lispref/elisp.texi @@ -797,6 +797,24 @@ Text Properties * Not Intervals:: Why text properties do not use Lisp-visible text intervals. +Non-ASCII Characters + +* Text Representations:: Unibyte and multibyte representations +* Converting Representations:: Converting unibyte to multibyte and vice versa. +* Selecting a Representation:: Treating a byte sequence as unibyte or multi. +* Character Codes:: How unibyte and multibyte relate to + codes of individual characters. +* Character Sets:: The space of possible characters codes + is divided into various character sets. +* Chars and Bytes:: More information about multibyte encodings. +* Splitting Characters:: Converting a character to its byte sequence. +* Scanning Charsets:: Which character sets are used in a buffer? +* Translation of Characters:: Translation tables are used for conversion. +* Coding Systems:: Coding systems are conversions for saving files. +* Input Methods:: Input methods allow users to enter various + non-ASCII characters without speciak keyboards. +* Locales:: Interacting with the POSIX locale. + Searching and Matching * String Search:: Search for an exact match. diff --git a/lispref/files.texi b/lispref/files.texi index 2972b64db83..b0389680568 100644 --- a/lispref/files.texi +++ b/lispref/files.texi @@ -1378,11 +1378,13 @@ how to manipulate file names. can operate on file names that do not refer to an existing file or directory. - On VMS, all these functions understand both VMS file-name syntax and -Unix syntax. This is so that all the standard Lisp libraries can -specify file names in Unix syntax and work properly on VMS without -change. On MS-DOS and MS-Windows, these functions understand MS-DOS or -MS-Windows file-name syntax as well as Unix syntax. + On MS-DOS and MS-Windows, these functions (like the function that +actually operate on files) accept MS-DOS or MS-Windows file-name syntax, +where backslashes separate the components, as well as Unix syntax; but +they always return Unix syntax. On VMS, these functions (and the ones +that operate on files) understand both VMS file-name syntax and Unix +syntax. This enables Lisp programs to specify file names in Unix syntax +and work properly on all systems without change. @menu * File Name Components:: The directory part of a file name, and the rest. @@ -1410,8 +1412,9 @@ parts: the @dfn{directory name} part, and the @dfn{nondirectory} part Concatenating these two parts reproduces the original file name. On most systems, the directory part is everything up to and including -the last slash (or backslash, on MS-DOS or MS-Windows); the nondirectory -part is the rest. The rules in VMS syntax are complicated. +the last slash (backslash is also allowed in input on MS-DOS or +MS-Windows); the nondirectory part is the rest. The rules in VMS syntax +are complicated. For some purposes, the nondirectory part is further subdivided into the name proper and the @dfn{version number}. On most systems, only @@ -1505,14 +1508,21 @@ The extension, in a file name, is the part that starts with the last @end example @end defun -@defvar directory-sep-char -@tindex directory-sep-char -This variable holds the character that the system normally uses to -separate file name components. The value is @code{?/} on GNU and Unix -systems, and @code{?\\} on MS-DOS and MS-Windows. Note that file names -using slashes as separators work properly in Emacs on all of these -systems; you are not obliged to use backslashes on Microsoft systems. +@ignore +Andrew Innes says that this + +@c @defvar directory-sep-char +@c @tindex directory-sep-char +This variable holds the character that Emacs normally uses to separate +file name components. The default value is @code{?/}, but on MS-Windows +you can set it to @code{?\\}; then the functions that transform file names +use backslashes in their output. + +File names using backslashes work as input to Lisp primitives even on +MS-DOS and MS-Windows, even if @code{directory-sep-char} has its default +value of @code{?/}. @end defvar +@end ignore @node Directory Names @comment node-name, next, previous, up @@ -1524,9 +1534,10 @@ systems; you are not obliged to use backslashes on Microsoft systems. kind of file, and it has a file name, which is related to the directory name but not identical to it. (This is not quite the same as the usual Unix terminology.) These two different names for the same entity are -related by a syntactic transformation. On most systems, this is simple: a -directory name ends in a slash, whereas the directory's name as a file -lacks that slash. On VMS, the relationship is more complicated. +related by a syntactic transformation. On most systems, this is simple: +a directory name ends in a slash (or backslash), whereas the directory's +name as a file lacks that slash. On VMS, the relationship is more +complicated. The difference between a directory name and its name as a file is subtle but crucial. When an Emacs variable or function argument is @@ -1555,9 +1566,9 @@ already end in one). On VMS, the function converts a string of the form @defun directory-file-name dirname This function returns a string representing @var{dirname} in a form that the operating system will interpret as the name of a file. On most -systems, this means removing the final slash from the string. On VMS, -the function converts a string of the form @file{[X.Y]} to -@file{[X]Y.DIR.1}. +systems, this means removing the final slash (or backslash) from the +string. On VMS, the function converts a string of the form @file{[X.Y]} +to @file{[X]Y.DIR.1}. @example @group @@ -1896,8 +1907,9 @@ in the directory, which is unpredictable and conveys no useful information. The argument @var{partial-filename} must be a file name containing no -directory part and no slash. The current buffer's default directory is -prepended to @var{directory}, if @var{directory} is not absolute. +directory part and no slash (or backslash on some systems). The current +buffer's default directory is prepended to @var{directory}, if +@var{directory} is not absolute. In the following example, suppose that @file{~rms/lewis} is the current default directory, and has five files whose names begin with @samp{f}: diff --git a/lispref/nonascii.texi b/lispref/nonascii.texi index d9750af1a4f..149d0354c29 100644 --- a/lispref/nonascii.texi +++ b/lispref/nonascii.texi @@ -12,18 +12,21 @@ characters and how they are stored in strings and buffers. @menu -* Text Representations:: -* Converting Representations:: -* Selecting a Representation:: -* Character Codes:: -* Character Sets:: -* Chars and Bytes:: -* Splitting Characters:: -* Scanning Charsets:: -* Translation of Characters:: -* Coding Systems:: -* Input Methods:: -* Locales:: Interacting with the POSIX locale. +* Text Representations:: Unibyte and multibyte representations +* Converting Representations:: Converting unibyte to multibyte and vice versa. +* Selecting a Representation:: Treating a byte sequence as unibyte or multi. +* Character Codes:: How unibyte and multibyte relate to + codes of individual characters. +* Character Sets:: The space of possible characters codes + is divided into various character sets. +* Chars and Bytes:: More information about multibyte encodings. +* Splitting Characters:: Converting a character to its byte sequence. +* Scanning Charsets:: Which character sets are used in a buffer? +* Translation of Characters:: Translation tables are used for conversion. +* Coding Systems:: Coding systems are conversions for saving files. +* Input Methods:: Input methods allow users to enter various + non-ASCII characters without speciak keyboards. +* Locales:: Interacting with the POSIX locale. @end menu @node Text Representations @@ -491,15 +494,17 @@ by a particular @dfn{coding system}. documented here. @menu -* Coding System Basics:: -* Encoding and I/O:: -* Lisp and Coding Systems:: -* User-Chosen Coding Systems:: -* Default Coding Systems:: -* Specifying Coding Systems:: -* Explicit Encoding:: -* Terminal I/O Encoding:: -* MS-DOS File Types:: +* Coding System Basics:: Basic concepts. +* Encoding and I/O:: How file I/O functions handle coding systems. +* Lisp and Coding Systems:: Functions to operate on coding system names. +* User-Chosen Coding Systems:: Asking the user to choose a coding system. +* Default Coding Systems:: Controlling the default choices. +* Specifying Coding Systems:: Requesting a particular coding system + for a single file operation. +* Explicit Encoding:: Encoding or decoding text without doing I/O. +* Terminal I/O Encoding:: Use of encoding for terminal I/O. +* MS-DOS File Types:: How DOS "text" and "binary" files + relate to coding systems. @end menu @node Coding System Basics diff --git a/lispref/os.texi b/lispref/os.texi index 2086849e19a..8116aa806be 100644 --- a/lispref/os.texi +++ b/lispref/os.texi @@ -747,6 +747,20 @@ value is @code{":"} for Unix and GNU systems, and @code{";"} for MS-DOS and MS-Windows. @end defvar +@defun parse-colon-path path +@tindex parse-colon-path +This function takes a search path string such as would be the value of +the @code{PATH} environment variable, and splits it at the separators, +returning a list of directory names. @code{nil} in this list stands for +``use the current directory.'' Although the function's name says +``colon,'' it actually uses the value of @code{path-separator}. + +@example +(parse-colon-path ":/foo:/bar") + @result{} (nil "/foo/" "/bar/") +@end example +@end defun + @defvar invocation-name This variable holds the program name under which Emacs was invoked. The value is a string, and does not include a directory name.