doc: about assignment to nonexistent awk fields.

* txr.1: Adding remark that assignment to nonexistent
fields isn't permitted, unlike in Awk.

1 files changed, 10 insertions, 0 deletions

diff --git a/txr.1 b/txr.1
index eac02f88..237be808 100644
--- a/txr.1
+++ b/txr.1
@@ -37948,6 +37948,16 @@ list which do not involve an implicit or explicit assignment to the variable
 .code f
 itself do not have this recalculating effect.
 
+Unlike in Awk, assigning to the nonexistent field
+.cblk
+.meti [f << m ]
+.cble
+where
+.meta m
+>=
+.code nf
+is erroneous.
+
 .coNP Variable @ nf
 .desc
 The awk variable