[Octave-bug-tracker] [bug #44095] readline configuration - tab autocompletion of paths

[Libor Morkovsky]

Follow-up Comment #17, bug #44095 (project octave):

The "assignment from incompatible pointer type" error is caused by 'const'
specifier. I misread the GNU readline documentation: "It should return a
character string like rl_completer_word_break_characters to be used to perform
the current completion.", where rl_completer_word_break_characters is const
char *, but rl_cpvfunc_t is a function that should return char *, while I'm
assigning pointer to a function returning const char *.

It is necessary to remove the const specifier all the way up from the chain
leading to dir_word_breaker in input.cc. But then you'll hit another kind of
warning for returning pointer to a string literal without const:
http://stackoverflow.com/questions/59670/how-to-get-rid-of-deprecated-conversion-from-string-constant-to-char-warnin
. Choose yourself, which one is better;)

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