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-rw-r--r--isa/isabelle-system.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/isa/isabelle-system.el b/isa/isabelle-system.el
index acd6d13a..fcb8ac2c 100644
--- a/isa/isabelle-system.el
+++ b/isa/isabelle-system.el
@@ -89,7 +89,7 @@ with full path."
"Like shell-command-to-string except the last character is stripped."
(let ((s (shell-command-to-string command)))
(if (equal (length s) 0) s
- (substring s -1))))
+ (substring s 0 -1))))
(defun isa-getenv (envvar &optional default)
"Extract an environment variable setting using the `isatool' program.