term: ignore LTR+RTL markers (U+200E + U+200F)

Foot doesn't implement RTL, and explicit LTR markers is neither
needed, nor used in anyway. In fact, they cause issues with font
lookup, as fcft often fails to find the marker codepoint in the
primary font, causing a fallback font to be used instead.

Closes #2049

CHANGELOG.md

@@ -63,6 +63,13 @@
 ## Unreleased
 ### Added
 ### Changed
+
+* Left-to-right and right-to-left markers (U+200E and U+200F) are now
+  ignored ([#2049][2049]).
+
+[2049]: https://codeberg.org/dnkl/foot/issues/2049
+
+
 ### Deprecated
 ### Removed
 ### Fixed
@@ -73,6 +80,8 @@
   codepoints ([#2039][2039]).
 * Keyboard modifiers not being reset on keyboard leave events
   ([#2034][2034]).
+* Last character in a `remind` calendar event being in the wrong font
+  and color ([#2049][2049]).
 
 [2039]: https://codeberg.org/dnkl/foot/issues/2039
 [2034]: https://codeberg.org/dnkl/foot/issues/2034

terminal.c

@@ -4156,6 +4156,14 @@ term_process_and_print_non_ascii(struct terminal *term, char32_t wc)
         (grapheme_clustering ||
          (!grapheme_clustering && width == 0 && wc >= 0x300)))
     {
+        if (unlikely(wc == 0x200e || wc == 0x200f)) {
+            /*
+             * Ignore left-to-right and right-to-left markers
+             * see https://codeberg.org/dnkl/foot/issues/2049
+             */
+            return;
+        }
+
         int col = term->grid->cursor.point.col;
         if (!term->grid->cursor.lcf)
             col--;