[gtk/wip/carlosg/fix-surrounding-text-again] imwayland: Clamp the surrounding string end correctly

[Carlos Garnacho <carlosg src gnome org>]

commit d7fb15c822eabe22ffda19892153d69b0f4fc2f3
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Apr 3 12:44:37 2020 +0200

    imwayland: Clamp the surrounding string end correctly
    
    In the paths where len > MAX_LEN and cursor/anchor are separated by
    at least MAX_LEN from text edges, we were clamping the right end of
    the surrounding string at MAX_LEN. Oops.
    
    This end anchor may go as far as the string length, although just
    up to len - MAX_LEN in real terms (due to the condition above that
    caches cursor/anchor positions being near enough the text end).
    
    Closes: https://gitlab.gnome.org/GNOME/gtk/-/issues/2565

 modules/input/imwayland.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/modules/input/imwayland.c b/modules/input/imwayland.c
index 8f697bec1b..12d18a0f64 100644
--- a/modules/input/imwayland.c
+++ b/modules/input/imwayland.c
@@ -322,7 +322,7 @@ notify_surrounding_text (GtkIMContextWayland *context)
           mid = MIN (context->surrounding.cursor_idx,
                      context->surrounding.anchor_idx) + (cursor_len / 2);
           a = MAX (0, mid - (MAX_LEN / 2));
-          b = MIN (MAX_LEN, mid + (MAX_LEN / 2));
+          b = MIN (len, mid + (MAX_LEN / 2));
 
           start = &context->surrounding.text[a];
           end = &context->surrounding.text[b];