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(mbswidth): Add a flags argument.

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(mbswidth): New declaration.
(MBSW_ACCEPT_INVALID, MBSW_ACCEPT_UNPRINTABLE): New macros.
This commit is contained in:
Jim Meyering
2000-07-29 06:02:28 +00:00
parent e7a7601ef4
commit f247c7bd44
1 changed files with 16 additions and 1 deletions
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17
lib/mbswidth.h
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@@ -23,4 +23,19 @@
# endif
#endif
extern int mbswidth PARAMS ((const char *string));
/* Optional flags to influence mbswidth/mbsnwidth behavior. */
/* Assume invalid characters have width 0. If this is not set, the
functions return -1 if an invalid or incomplete character occurs. */
#define MBSW_ACCEPT_INVALID 1
/* Assume unprintable characters have width 1. If this is not set, the
functions return -1 if a non-printable character occurs. */
#define MBSW_ACCEPT_UNPRINTABLE 2
/* Returns the number of screen columns needed for STRING. */
extern int mbswidth PARAMS ((const char *string, int flags));
/* Returns the number of screen columns needed for the NBYTES bytes
starting at BUF. */
extern int mbsnwidth PARAMS ((const char *buf, size_t nbytes, int flags));