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Avoid multiply defining {HIGH,LOW}_SURROGATE_{START,END}.

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A user reports that under OpenWatcom these are defined in <winnls.h>,
in which case it's redundant to redefine them ourselves and provokes a
compiler diagnostic.
This commit is contained in:
Simon Tatham 2019-03-11 19:06:02 +00:00
parent 804ac21381
commit ba91e4b996
1 changed files with 2 additions and 0 deletions
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putty.h
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@ -2171,10 +2171,12 @@ void request_callback_notifications(toplevel_callback_notify_fn_t notify,
#endif
/* SURROGATE PAIR */
#ifndef HIGH_SURROGATE_START /* in some toolchains <winnls.h> defines these */
#define HIGH_SURROGATE_START 0xd800
#define HIGH_SURROGATE_END 0xdbff
#define LOW_SURROGATE_START 0xdc00
#define LOW_SURROGATE_END 0xdfff
#endif
/* These macros exist in the Windows API, so the environment may
* provide them. If not, define them in terms of the above. */