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-rw-r--r--editors/awk.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/editors/awk.c b/editors/awk.c
index d69720d64..42f6ef866 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -1812,6 +1812,18 @@ static void handle_special(var *v)
is_f0_split = FALSE;
} else if (v == intvar[FS]) {
+ /*
+ * The POSIX-2008 standard says that changing FS should have no effect on the
+ * current input line, but only on the next one. The language is:
+ *
+ * > Before the first reference to a field in the record is evaluated, the record
+ * > shall be split into fields, according to the rules in Regular Expressions,
+ * > using the value of FS that was current at the time the record was read.
+ *
+ * So, split up current line before assignment to FS:
+ */
+ split_f0();
+
mk_splitter(getvar_s(v), &fsplitter);
} else if (v == intvar[RS]) {