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-rw-r--r--src/bin/pgbench/exprscan.l21
1 files changed, 19 insertions, 2 deletions
diff --git a/src/bin/pgbench/exprscan.l b/src/bin/pgbench/exprscan.l
index 9a3be3d667f..dc1367bbdbc 100644
--- a/src/bin/pgbench/exprscan.l
+++ b/src/bin/pgbench/exprscan.l
@@ -66,6 +66,9 @@ space [ \t\r\f\v]
nonspace [^ \t\r\f\v\n]
newline [\n]
+/* Line continuation marker */
+continuation \\{newline}
+
/* Exclusive states */
%x EXPR
@@ -96,8 +99,20 @@ newline [\n]
return 1;
}
+ /*
+ * We need this rule to avoid returning "word\" instead of recognizing
+ * a continuation marker just after a word:
+ */
+{nonspace}+{continuation} {
+ /* Found "word\\\n", emit and return just "word" */
+ psqlscan_emit(cur_state, yytext, yyleng - 2);
+ return 1;
+ }
+
{space}+ { /* ignore */ }
+{continuation} { /* ignore */ }
+
{newline} {
/* report end of command */
last_was_newline = true;
@@ -138,14 +153,16 @@ newline [\n]
return FUNCTION;
}
+{space}+ { /* ignore */ }
+
+{continuation} { /* ignore */ }
+
{newline} {
/* report end of command */
last_was_newline = true;
return 0;
}
-{space}+ { /* ignore */ }
-
. {
/*
* must strdup yytext so that expr_yyerror_more doesn't