mirror of
git://git.code.sf.net/p/cdesktopenv/code
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2b805f7f1c
Many of the errors fixed in this commit are word repetitions such as 'the the' and minor spelling errors. One formatting error in the ksh man page has also been fixed.
152 lines
2.9 KiB
Text
152 lines
2.9 KiB
Text
.sp 3
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.tl ''Ksh Features That Are Obsolete in Ksh93''
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.sp 2
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.AL 1
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.LI
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Using a pair of grave accents \^\fB\(ga\fR ... \fB\(ga\fR\^
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for command substitution. Use \fB$(\fR ... \fB)\fR instead.
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.LI
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.B FCEDIT
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is an obsolete name for
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the default editor name for the
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.B hist
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command.
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.B FCEDIT
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is not used when
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.B HISTEDIT
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is set. Use
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.B HISTEDIT
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instead.
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.LI
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The newtest (\fB[[\fR ... \fB]]\fR) operator
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\fB\-a\fP \fIfile\fP
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is obsolete. Use
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\fB\-e\fP instead.
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.LI
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The newtest (\fB[[\fR ... \fB]]\fR) operator
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.BR = ,
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as used in
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\fIstring\fP \fB=\fP \fIpattern\fP
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is obsolete. Use
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\fB==\fP instead.
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.LI
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The following obsolete arithmetic comparisons are also permitted:
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.in +5
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.VL 20
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.LI "\fIexp1\fP \fB\-eq\fP \fIexp2\fP"
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True, if
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.I exp1
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is equal to
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.IR exp2 .
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.LI "\fIexp1\fP \fB\-ne\fP \fIexp2\fP"
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True, if
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.I exp1
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is not equal to
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.IR exp2 .
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.LI "\fIexp1\fP \fB\-lt\fP \fIexp2\fP"
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True, if
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.I exp1
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is less than
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.IR exp2 .
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.LI "\fIexp1\fP \fB\-gt\fP \fIexp2\fP"
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True, if
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.I exp1
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is greater than
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.IR exp2 .
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.LI "\fIexp1\fP \fB\-le\fP \fIexp2\fP"
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True, if
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.I exp1
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is less than or equal to
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.IR exp2 .
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.LI "\fIexp1\fP \fB\-ge\fP \fIexp2\fP"
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True, if
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.I exp1
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is greater than or equal to
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.IR exp2 .
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.LE \" End .VL
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.in -5
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.LI
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Using test -t or [ -t ] without specifying the file unit number.
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.LI
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The
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.B \-k
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option to the \fBset\fR builtin is obsolete. It causes
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.I all\^
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variable assignment arguments are placed in the environment,
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even if they occur after the command name.
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The following
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first prints
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.B "a=b c"
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and then
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.BR c :
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There is no alternative.
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.LI
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The obsolete
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.B \-xf
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option of the
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.B typeset
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command allows a function to be exported
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to scripts that are executed without a separate
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invocation of the shell.
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Functions that need to be defined across separate
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invocations of the shell should
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be placed in a directory and the
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.B FPATH
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variable should contains the name of this directory.
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They may also
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be specified in the
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.B ENV
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file with the
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.B \-xf
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option of
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.BR typeset .
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.LI
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The shell environment variable
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.B FCEDIT
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is obsolete. Use
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.B HISTEDIT
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instead.
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.LI
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In the
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.B \-s
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option
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(to \fBfc\fR or \fBhist\fR command???)
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(
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and in obsolete versions, the editor name
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.B \-
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)
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is used to skip the editing phase and
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to re-execute the command.
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.LI
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The
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.B \-t
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option to \fBalias\fR builtin is obsolete. It
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is used to set and list tracked aliases.
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There is no replacement.
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.LI
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The shell command line option
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.B \-t
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is obsolete. This option causes the shell to exit after reading
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and executing one command. The is no replacement (although ending
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\&"command" with the exit builtin should have the same effect).
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.LI
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As an obsolete feature of the "set" builtin,
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if the first
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.I arg\^
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is
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.B \-
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then the
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.B \-x
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and
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.B \-v
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options are turned off and the next
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.I arg
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is treated as the first argument.
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Using
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.B \+
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rather than
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.B \-
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causes these options to be turned off.
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These options can also be used upon invocation of the shell.
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.LE
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