* processes.texi (Shell Arguments): Copyedits.
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2009-07-18 Chong Yidong <cyd@stupidchicken.com>
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* processes.texi (Shell Arguments): Copyedits.
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2009-07-18 Glenn Morris <rgm@gnu.org>
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* loading.texi (Repeated Loading): Fix typo.
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@ -195,33 +195,32 @@ a shell command:
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@end defun
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@cindex quoting and unquoting shell command line
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The following two functions help creating shell commands from
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individual argument strings and taking shell command lines apart into
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individual arguments.
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The following two functions are useful for creating shell commands
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from individual argument strings, and taking shell command lines apart
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into individual arguments.
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@defun split-string-and-unquote string &optional separators
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This function splits @var{string} into substrings at matches for the
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regular expression @var{separators}, like @code{split-string} does
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(@pxref{Creating Strings}), but it additionally removes quoting from
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the substrings. It then makes a list of the substrings and returns
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it.
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(@pxref{Creating Strings}); in addition, it removes quoting from the
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substrings. It then makes a list of the substrings and returns it.
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If @var{separators} is omitted or @code{nil}, it defaults to
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@code{"\\s-+"}, which is a regular expression that matches one or more
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characters with whitespace syntax (@pxref{Syntax Class Table}).
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The quoting this function supports is of 2 styles: by enclosing a
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whole string in double quotes @code{"@dots{}"}, or by quoting
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individual characters with a backslash escape @samp{\}. The latter is
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also used in Lisp strings, so this function can handle those as well.
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This function performs two types of quoting: enclosing a whole string
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in double quotes @code{"@dots{}"}, and quoting individual characters
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with a backslash escape @samp{\}. The latter is also used in Lisp
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strings, so this function can handle those as well.
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@end defun
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@defun combine-and-quote-strings list-of-strings &optional separator
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This function concatenates @var{list-of-strings} into a single string,
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quoting each string in the list that needs quoting as it goes. It
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also sticks the @var{separator} string in between each pair of strings
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in the result, and returns that result. If @var{separator} is omitted
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or @code{nil}, it defaults to a blank @code{" "}.
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quoting each string as necessary. It also sticks the @var{separator}
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string between each pair of strings; if @var{separator} is omitted or
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@code{nil}, it defaults to @code{" "}. The return value is the
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resulting string.
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The strings in @var{list-of-strings} that need quoting are those that
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include @var{separator} as their substring. Quoting a string encloses
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