See ticket #74 for more information, but when it was implemented it broke some command-line redirection within PyRAF:
On Feb 1, 2008, at 8:58 AM, Howard wrote:
...
For the past couple decades I have used igi with command files
that I pipe into it by redirecting stdin, e.g.
cl>igi<myplot.cmds
which opens a graph window and displays the results of the
plotting commands stored in the input text file "myplot.cmds".
Until recently this has always worked in PyRAF as well. But it
seems to have stopped working sometime within the last few
weeks or couple months or so.
When I execute this command, the graph window pops up, but no
plot output appears. It leaves me in the interactive igi command
mode, which if I then type a few igi commands, those results
appear just fine.
Also, if I execute the same command, but redirect the output
to a postscript file, the postscript file is fine, e.g.
cl>igi<myplot.cmds device=psi_land
So it's only the case of asking it to plot to the terminal
graph window where the plot commands seem to be getting
swallowed or lost or something (maybe a broken pipe somewhere?).
This all works fine under the cl - the problem only occurs in
PyRAF and occurs for both the current versions of irafx and
irafdev.
And yet, the logic added for #74 was needed for an external user. One approach might be to make the default behavior act as it did before #74, but employ a configurable option to enable the 'special behavior'.
