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Full Discussion: ksh bug?
Top Forums UNIX for Advanced & Expert Users ksh bug? Post 302875893 by Don Cragun on Wednesday 20th of November 2013 04:24:17 PM
Old 11-20-2013
OK. With this example, I'm seeking the same problem when using ksh version:
Code:
  version         sh (AT&T Research) 1993-12-28 s+

on OS/X. With this version the trace looks like:
Code:
+ cat
+ echo hello
+ 2>& 1 + x='1> /dev/null'
+ [ -n '1> /dev/null' ]
+ echo WRONG
WRONG
+ cat
+ echo hello
+ 1> /dev/null 2>& 1
+ y=''
+ [ -n '' ]
+ echo RIGHT
RIGHT

 

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echo(3XCURSES)						  X/Open Curses Library Functions					    echo(3XCURSES)

NAME
echo, noecho - enable/disable terminal echo SYNOPSIS
cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib -R /usr/xpg4/lib -lcurses [ library... ] c89 [ flag... ] file... -lcurses [ library... ] #include <curses.h> int echo(void); int noecho(void); DESCRIPTION
The echo() function enables Echo mode for the current screen. The noecho() function disables Echo mode for the current screen. Initially, curses software echo mode is enabled and hardware echo mode of the tty driver is disabled. The echo() and noecho() functions control soft- ware echo only. Hardware echo must remain disabled for the duration of the application, else the behavior is undefined. RETURN VALUES
Upon successful completion, these functions return OK. Otherwise, they return ERR. ERRORS
No errors are defined. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
getch(3XCURSES), getstr(3XCURSES), initscr(3XCURSES), libcurses(3XCURSES), scanw(3XCURSES), attributes(5), standards(5) SunOS 5.10 5 Jun 2002 echo(3XCURSES)
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