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728 Appendix B
Expression Evaluator Functions
DELIMPOS
(str,[,delims]
[,nth][,start])
returns index
in str of the nth
delimiter
beginning at
start; default
delims are a
space, a
comma, a
semicolon, an
equals sign, left
and right
parentheses,
left and right
brackets, single
quote, double
quote, and Tab;
default nth is 1;
default start is 1
DELIMPOS('file a=bb,
old;rec=40,,f,ascii')
5
DIRNAME()(string) returns
dirctory
components of
a filename
DWNS(string) shift string to
lowercase (7)
dwns('aBC&#dE') abc&#de
EDIT(string,editstr
[,start])
performs full
REDO-like
editing of a
string
EDIT(`abcdefg','>dd')
EDIT('ab cd;g', 'dwd')
'abce'
'cd;g'
FINFO(filename,
option)
file information
(6)
FINFO('x.pub',0) TRUE
Symbol Function Example Result