mtext_prop_range - Find the range where the value of a text property is the
, int pos
, int * from
, int * to
Find the range where the value of a text property is the same.
The mtext_prop_range() function investigates the extent where all characters
have the same value for a text property. It first finds the value of the
property specified by key of the character at pos in M-text mt .
it checks if adjacent characters have the same value for the property key
The beginning and the end of the found range are stored to the
variable pointed to by from and to .
The character position stored in
from is inclusive but that in to is exclusive; this fashion is compatible with
the range specification in the mtext_put_prop() function, etc.
If deeper is not 0, not only the topmost but also all the stacked properties
whose key is key are compared.
If from is NULL ,
the beginning of range is not searched for. If to is
the end of range is not searched for.
If the operation was successful, mtext_prop_range() returns the number of values
the property key has at pos. Otherwise it returns -1 and assigns an error code
to the external variable merror_code .
mtext_put_prop(), mtext_put_prop_values() ,
mtext_get_prop() , mtext_get_prop_values() , mtext_pop_prop()
Copyright (C) 2001 Information-technology Promotion Agency (IPA)
Copyright (C) 2001-2009 National Institute of Advanced Industrial Science and
Permission is granted to copy, distribute and/or modify this document under the
terms of the GNU Free Documentation License