summaryrefslogtreecommitdiff
path: root/lisp/emacs-lisp
diff options
context:
space:
mode:
Diffstat (limited to 'lisp/emacs-lisp')
-rw-r--r--lisp/emacs-lisp/comp-cstr.el16
1 files changed, 12 insertions, 4 deletions
diff --git a/lisp/emacs-lisp/comp-cstr.el b/lisp/emacs-lisp/comp-cstr.el
index 1927207db63..62e3c47ce3a 100644
--- a/lisp/emacs-lisp/comp-cstr.el
+++ b/lisp/emacs-lisp/comp-cstr.el
@@ -288,6 +288,14 @@ Return them as multiple value."
((eq y '-) nil)
(t (< x y))))
+(defsubst comp-cstr-smallest-in-range (range)
+ "Smallest entry in RANGE."
+ (caar range))
+
+(defsubst comp-cstr-greatest-in-range (range)
+ "Greater entry in RANGE."
+ (cdar (last range)))
+
(defun comp-range-union (&rest ranges)
"Combine integer intervals RANGES by union set operation."
(cl-loop
@@ -687,7 +695,7 @@ SRC can be either a comp-cstr or an integer."
(if (integerp src)
`((,(1+ src) . +))
(when-let* ((range (range src))
- (low (cdar (last range)))
+ (low (comp-cstr-greatest-in-range range))
(okay (integerp low)))
`((,(1+ low) . +))))))
(comp-cstr-set-cmp-range dst old-dst ext-range))))
@@ -700,7 +708,7 @@ SRC can be either a comp-cstr or an integer."
(if (integerp src)
`((,src . +))
(when-let* ((range (range src))
- (low (cdar (last range)))
+ (low (comp-cstr-greatest-in-range range))
(okay (integerp low)))
`((,low . +))))))
(comp-cstr-set-cmp-range dst old-dst ext-range))))
@@ -713,7 +721,7 @@ SRC can be either a comp-cstr or an integer."
(if (integerp src)
`((- . ,(1- src)))
(when-let* ((range (range src))
- (low (caar (last range)))
+ (low (comp-cstr-smallest-in-range range))
(okay (integerp low)))
`((- . ,(1- low)))))))
(comp-cstr-set-cmp-range dst old-dst ext-range))))
@@ -726,7 +734,7 @@ SRC can be either a comp-cstr or an integer."
(if (integerp src)
`((- . ,src))
(when-let* ((range (range src))
- (low (caar (last range)))
+ (low (comp-cstr-smallest-in-range range))
(okay (integerp low)))
`((- . ,low))))))
(comp-cstr-set-cmp-range dst old-dst ext-range))))