1 files changed, 83 insertions, 0 deletions
diff --git a/gnu/packages/patches/ecl-16-format-directive-limit.patch b/gnu/packages/patches/ecl-16-format-directive-limit.patch
new file mode 100644
index 0000000000..237db92722
--- /dev/null
+++ b/gnu/packages/patches/ecl-16-format-directive-limit.patch
@@ -0,0 +1,83 @@
+Patch backported by Sage.
+
+Fix from upstream that happens to work around
+https://trac.sagemath.org/ticket/23011
+diff --git a/src/lsp/format.lsp b/src/lsp/format.lsp
+index 77ca799..53b887c 100644
+--- a/src/lsp/format.lsp
++++ b/src/lsp/format.lsp
+@@ -307,11 +307,13 @@
+                   :start (format-directive-start struct)
+                   :end (format-directive-end struct))))
+ 
++(defconstant +format-directive-limit+ (1+ (char-code #\~)))
++
+ #+formatter
+ (defparameter *format-directive-expanders*
+-  (make-array char-code-limit :initial-element nil))
++  (make-array +format-directive-limit+ :initial-element nil))
+ (defparameter *format-directive-interpreters*
+-  (make-array char-code-limit :initial-element nil))
++  (make-array +format-directive-limit+ :initial-element nil))
+ 
+ (defparameter *default-format-error-control-string* nil)
+ (defparameter *default-format-error-offset* nil)
+@@ -550,24 +552,24 @@
+            (write-string directive stream)
+            (interpret-directive-list stream (cdr directives) orig-args args))
+           (#-ecl format-directive #+ecl vector
++           (multiple-value-bind
++                 (new-directives new-args)
++               (let* ((code (char-code (format-directive-character directive)))
++                      (function
++                        (and (< code +format-directive-limit+)
++                             (svref *format-directive-interpreters* code)))
++                      (*default-format-error-offset*
++                        (1- (format-directive-end directive))))
++                 (unless function
++                   (error 'format-error
++                          :complaint "Unknown format directive."))
+                  (multiple-value-bind
+                        (new-directives new-args)
+-                     (let ((function
+-                            (svref *format-directive-interpreters*
+-                                   (char-code (format-directive-character
+-                                               directive))))
+-                           (*default-format-error-offset*
+-                            (1- (format-directive-end directive))))
+-                       (unless function
+-                         (error 'format-error
+-                                :complaint "Unknown format directive."))
+-                       (multiple-value-bind
+-                             (new-directives new-args)
+-                           (funcall function stream directive
+-                                    (cdr directives) orig-args args)
+-                         (values new-directives new-args)))
+-                   (interpret-directive-list stream new-directives
+-                                             orig-args new-args)))))
++                     (funcall function stream directive
++                              (cdr directives) orig-args args)
++                   (values new-directives new-args)))
++             (interpret-directive-list stream new-directives
++                                       orig-args new-args)))))
+       args))
+ 
+ 
+@@ -639,11 +641,12 @@
+        (values `(write-string ,directive stream)
+                more-directives))
+       (format-directive
+-       (let ((expander
+-              (aref *format-directive-expanders*
+-                    (char-code (format-directive-character directive))))
+-             (*default-format-error-offset*
+-              (1- (format-directive-end directive))))
++       (let* ((code (char-code (format-directive-character directive)))
++              (expander
++                (and (< code +format-directive-limit+)
++                     (svref *format-directive-expanders* code)))
++              (*default-format-error-offset*
++                (1- (format-directive-end directive))))
+          (if expander
+              (funcall expander directive more-directives)
+              (error 'format-error