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| author | Ted Lemon <source@isc.org> | 1999-07-31 21:37:12 +0000 |
|---|---|---|
| committer | Ted Lemon <source@isc.org> | 1999-07-31 21:37:12 +0000 |
| commit | 6499fe2748078e013999be2fa46e58ca1e75289b (patch) | |
| tree | 19e5dd01545e78e202c480e831ee10bc5538ba5e /common/dhcp-eval.5 | |
| parent | 720c82626e7df0756c793cf1edc45e80e2f1bca9 (diff) | |
| download | isc-dhcp-6499fe2748078e013999be2fa46e58ca1e75289b.tar.gz | |
Document changes to concat.
Diffstat (limited to 'common/dhcp-eval.5')
| -rw-r--r-- | common/dhcp-eval.5 | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/common/dhcp-eval.5 b/common/dhcp-eval.5 index 6c0b28e1..89fd9b33 100644 --- a/common/dhcp-eval.5 +++ b/common/dhcp-eval.5 @@ -240,13 +240,12 @@ A list of hexadecimal octet values, seperated by colons, may be specified as a data expression. .RE .PP -.B concat (\fIdata-expr1\fB, \fIdata-expr2\fB)\fR +.B concat (\fIdata-expr1\fB, ..., \fIdata-exprN\fB)\fR .RS 0.25i -The two expressions are evaluated, and the result of concatenating the -results of the two evaluations is returned. If either subexpression -evaluates to null, then the result is the value of the other -expression. If both expressions evaluate to null, then the result is -null. +The expressions are evaluated, and the results of each evaluation are +concatenated in the sequence that the subexpressions are listed. Any +subexpression that evaluates to null is treated as a zero-length string. +If all the arguments to concat are null, the result is also null. .RE .PP .B reverse (\fInumeric-expr1\fB, \fIdata-expr2\fB)\fR |