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7bc5c369fa
The "set index-cache" command is used at the same time as a prefix
command (prefix for "set index-cache directory", for example), and a
boolean setting for turning the index-cache on and off. Even though I
did introduce that, I now don't think it's a good idea to do something
non-standard like this.
First, there's no dedicated CLI command to show whether the index-cache
is enabled, so it has to be custom output in the "show index-cache
handler". Also, it means there's no good way a MI frontend can find out
if the index-cache is enabled. "-gdb-show index-cache" doesn't show it
in the MI output record:
(gdb) interpreter-exec mi "-gdb-show index-cache"
~"\n"
~"The index cache is currently disabled.\n"
^done,showlist={option={name="directory",value="/home/simark/.cache/gdb"}}
Fix this by introducing "set/show index-cache enabled on/off", regular
boolean setting commands. Keep commands "set index-cache on" and "set
index-cache off" as deprecated aliases of "set index-cache enabled",
with respectively the default arguments "on" and "off".
Update tests using "set index-cache on/off" to use the new command.
Update the regexps in gdb.base/maint.exp to figure out whether the
index-cache is enabled or not. Update the doc to mention the new
commands.
Change-Id: I7d5aaaf7fd22bf47bd03e0023ef4fbb4023b37b3
