fix: weather ASCII art wraps when window is narrow

Enable truncate-lines in wttrin-mode so the fixed-width weather art
clips at the window edge instead of wrapping and breaking the layout.

2 files changed, 14 insertions, 0 deletions

diff --git a/tests/test-wttrin--display-weather.el b/tests/test-wttrin--display-weather.el
index b30c5b5..bca6a6c 100644
--- a/tests/test-wttrin--display-weather.el
+++ b/tests/test-wttrin--display-weather.el
@@ -243,5 +243,17 @@ not the lowercase version that wttr.in returns."
             (should (string-match-p "Wind: 5 km/h" contents)))))
     (test-wttrin--display-weather-teardown)))
 
+;;; Line Wrapping
+
+(ert-deftest test-wttrin--display-weather-normal-truncate-lines-enabled ()
+  "Weather buffer should not wrap lines — the ASCII art breaks if it does."
+  (test-wttrin--display-weather-setup)
+  (unwind-protect
+      (testutil-wttrin-with-clean-weather-buffer
+        (wttrin--display-weather "Paris" test-wttrin--display-weather-sample-raw-data)
+        (with-current-buffer "*wttr.in*"
+          (should truncate-lines)))
+    (test-wttrin--display-weather-teardown)))
+
 (provide 'test-wttrin--display-weather)
 ;;; test-wttrin--display-weather.el ends here
diff --git a/wttrin.el b/wttrin.el
index 2dc231d..55b3e4b 100644
--- a/wttrin.el
+++ b/wttrin.el
@@ -370,6 +370,8 @@ Weather data is displayed in a read-only buffer with the following keybindings:
 
 \\{wttrin-mode-map}"
   (buffer-disable-undo)
+  ;; ASCII art breaks if lines wrap at the window edge
+  (setq truncate-lines t)
   ;; Use face-remap instead of buffer-face-mode to preserve xterm-color faces
   (face-remap-add-relative 'default
                            :family wttrin-font-name