Improve ignoring case in single byte locales.

2 files changed, 8 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index ddf4469a..5418b28b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,12 @@
 	However, if start > 0, avoid dfa matcher, since it can't handle
 	the case where the search starts in the middle of a string.
 
+	Unrelated:
+
+	* eval.c (load_casetable): Reset casetable[i] to `i' if i
+	should not be mapped to upper case. Fixes inconsistencies between
+	dfa and regex in some single bytes locales; notably el_GR.iso88597.
+
 2016-07-23         Andrew J. Schorr     <aschorr@telemetry-investments.com>
 
 	* builtin.c (do_print): Improve logic for formatting
diff --git a/eval.c b/eval.c
index 48049ae3..36dab2fb 100644
--- a/eval.c
+++ b/eval.c
@@ -220,6 +220,8 @@ load_casetable(void)
 	for (i = 0200; i <= 0377; i++) {
 		if (isalpha(i) && islower(i) && i != toupper(i))
 			casetable[i] = toupper(i);
+		else
+			casetable[i] = i;
 	}
 #endif
 #endif