mirror of
git://git.code.sf.net/p/cdesktopenv/code
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f9fdbfc9e9
Most of these fixes are for typos and extra whitespace at the end of lines. These are the notable changes: - Fixed a compatibility issue with how asterisks are displayed using certain fonts. Bug report: https://github.com/att/ast/issues/764 - Fixed a bug in the man page that caused searches for the '|' character to fail. Bug report: https://github.com/att/ast/issues/871 - Removed a duplicate description of 'set -B' from the man page. Bug report: https://github.com/att/ast/issues/789 - Added documentation for options missing from the ksh man page (applies to 'hist -N', 'sleep -s', 'whence -q' and many of ulimit's options). Bug reports: https://github.com/att/ast/issues/948 https://github.com/att/ast/issues/503#issuecomment-386649715 https://github.com/att/ast/issues/507#issuecomment-507924608 - Applied the following ksh2020 documentation fixes: https://github.com/att/ast/pull/351 https://github.com/att/ast/pull/352 - Fixed a minor GCC -Wformat warning in procopen.c by changing a sentinel to NULL.
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 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 cause 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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