From 061291cabfe23b5c7742ac5bc4dc7e968278ad00 Mon Sep 17 00:00:00 2001
From: default <nobody@localhost>
Date: Tue, 10 Jan 2023 08:45:36 +0100
Subject: Backport from xs.

---
 xs.h | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

(limited to 'xs.h')

diff --git a/xs.h b/xs.h
index 666f536..68236a1 100644
--- a/xs.h
+++ b/xs.h
@@ -459,13 +459,21 @@ d_char *xs_crop(d_char *str, int start, int end)
 d_char *xs_strip_chars(d_char *str, const char *chars)
 /* strips the string of chars from the start and the end */
 {
-    int s, e;
+    int n;
+
+    /* strip first from the end */
+    for (n = strlen(str); n > 0 && strchr(chars, str[n - 1]); n--);
+    str[n] = '\0';
 
-    for (s = 0; strchr(chars, str[s]); s++);
-    for (e = strlen(str); e > 0 && strchr(chars, str[e - 1]); e--);
+    if (str[0]) {
+        /* now strip from the beginning */
+        for (n = 0; str[n] && strchr(chars, str[n]); n++);
 
-    str[e] = '\0';
-    return xs_collapse(str, 0, s);
+        if (n)
+            str = xs_collapse(str, 0, n);
+    }
+
+    return str;
 }
 
 
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