From ff6489bff53f19713e2c76a351886bb094c2d317 Mon Sep 17 00:00:00 2001
From: Connor Olding <cloningdonor@gmail.com>
Date: Fri, 1 Oct 2021 12:00:23 -0700
Subject: [PATCH] improve busybox awk compatibility

---
 sh/e       | 2 ++
 sh/similar | 8 +++-----
 sh/trunc   | 4 ++--
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/sh/e b/sh/e
index 278d856..30d6e4a 100755
--- a/sh/e
+++ b/sh/e
@@ -4,6 +4,8 @@
 # NO_DASH
 # NO_ASH
 
+# works with busybox awk.
+
 e() { ### @-
     ### wrap around `$EDITOR` to run it as root if necessary.
     ### this still needs some work to detect root-owned directories.
diff --git a/sh/similar b/sh/similar
index 18c843e..f54472e 100755
--- a/sh/similar
+++ b/sh/similar
@@ -4,7 +4,7 @@
 # YES_DASH
 # YES_ASH
 
-# does not work with busybox awk (yet?)
+# works with busybox awk.
 
 similar() { ### @-
     ### highlight adjacent lines up to the first inequivalent character.
@@ -12,10 +12,8 @@ similar() { ### @-
     awk '
     {
         i=0
-        split($0,a,"")
-        split(L,b,"")
-        for (c in a)
-            if (a[c]==b[c]) i++
+        for(c=1;c<length;c++)
+            if(substr($0,c,1)==substr(L,c,1)) i++
             else break
         #print substr($0,1,i) "\033[7m" substr($0,i+1) "\033[0m"
         print "\033[31m" substr($0,1,i) "\033[0m" substr($0,i+1)
diff --git a/sh/trunc b/sh/trunc
index 8537e40..67879ba 100755
--- a/sh/trunc
+++ b/sh/trunc
@@ -4,7 +4,7 @@
 # YES_DASH
 # YES_ASH
 
-# does not work with busybox awk (yet?)
+# works with busybox awk.
 
 trunc() { ### @-
     ### truncate text to fit within your terminal using the unicode character `…`.
@@ -18,7 +18,7 @@ trunc() { ### @-
 
     [ $# -le 1 ] || { printf "%s\n" "$0: too many arguments" >&2; return 1; }
     COLUMNS=${COLUMNS:-$(tput cols)}
-    awk -vL=${1:-$COLUMNS} '{e=length>L?"…":"";print substr($0,0,L-(e?1:0)) e}'
+    awk -vL=${1:-$COLUMNS} '{e=length()>L?"…":"";print substr($0,0,L-(e?1:0)) e}'
 }
 
 [ -n "${preload+-}" ] || trunc "$@"