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tty's compress_str(), core's dat/keyhelp

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Rewrite 3.6.1's compress_str() to avoid peeking past the end of the
input string.  This should eliminate the reported valgrind complaint.
The problem was noticed for post-3.6.0 code introduced [by me...] last
June, but it looks like it was present in the old code too.

Also, fix the wording in the paragraph about NUL in the keyhelp text.

tty_putstr() always passes non-message window text through compress_str(),
clobbering usage of two spaces to separate sentences.  putstr()'s caller
ought to have more control over that (possibly via its hardly ever used
'attribute' arg?).
This commit is contained in:
PatR
2016-12-20 12:43:35 -08:00
parent f4632732ac
commit d606b2a8ff
2 changed files with 21 additions and 18 deletions
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12
dat/keyhelp
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@@ -14,12 +14,12 @@
is reporting the wrong character but will be operating correctly if
it describes ^J when you type ^M.
A NUL character, typed as ^<space> on some keyboards, ^@ on others,
and maybe not typeable at all on yet others. It is not used as a
command, and will be converted into ESC before reaching 'whatdoes'.
Unlike ^M, this transformation is performed by NetHack itself.
But like ^M, if you type NUL and get feedback about ESC, the
situation is expected.
A NUL character, which is typed as ^<space> on some keyboards,
^@ on others, and maybe not typeable at all on yet others, is not
used as a command, and will be converted into ESC before reaching
'whatdoes'. Unlike ^M, this transformation is performed within
NetHack. But like ^M, if you type NUL and get feedback about ESC,
the situation is expected.
ESC itself is a synonym for ^[, and is another source of oddity.
Various function keys, including cursor arrow keys, may transmit