Merge pull request #1609 from contour-terminal/fix/vi-mode-big-moves

Fix vi-modifier `viW` / `oiW` / `yiW` as well as `B` and `W` (white space delimited motions)

Author: christianparpart

metainfo.xml

@@ -107,8 +107,9 @@
     <release version="0.5.1" urgency="medium" type="development">
       <description>
         <ul>
-          <li>Port to C++20's `std::format()` (#1598)</li>
+          <li>Fixes vi-mode motions like `viW`, `yiW`, `oiW` as well as `B` and `W`</li>
           <li>Enable support for Unicode version 16.0.0 (#1606)</li>
+          <li>Port to C++20's `std::format()` (#1598)</li>
           <li>Drop support for Ubuntu 23.10 and older. In order to have less burdain of maintencne, we only support the latest LTS of Ubuntu, which currently is 24.04 (#1607)</li>
           <li>Fix rendered backend loading from config</li>
         </ul>

src/vtbackend/Line.h

@@ -215,7 +215,8 @@ class Line
             return unbox<size_t>(column) >= trivialBuffer().text.size()
                    || trivialBuffer().text[column.as<size_t>()] == 0x20;
         }
-        return inflatedBuffer().at(unbox<size_t>(column)).empty();
+        auto const& cell = inflatedBuffer().at(unbox<size_t>(column));
+        return cell.empty() || (cell.codepointCount() == 1 && cell.codepoint(0) == 0x20);
     }
 
     [[nodiscard]] uint8_t cellWidthAt(ColumnOffset column) const noexcept