use in-place arithmetic where applicable

home/bashrc

@@ -42,9 +42,9 @@ ADDPATH "$HOME/sh"
       > ~/.sh-bash
 )
 
-SOURCING=$((SOURCING+1))
+: $((SOURCING+=1))
 . ~/.sh-bash
-SOURCING=$((SOURCING-1))
+: $((SOURCING-=1))
 
 # TODO: respect initctl like in .zshrc.
 alias reload='cd; exec bash'

home/zshrc

@@ -62,9 +62,9 @@ function {
     [ "$a" = "$b" ] && touch ~/.sh.zwc || zrecompile -p ~/.sh
 }
 
-SOURCING=$((SOURCING+1))
+: $((SOURCING+=1))
 . ~/.sh
-SOURCING=$((SOURCING-1))
+: $((SOURCING-=1))
 
 local fuzzy=`has fzy || print`
 

sh/baks

@@ -3,9 +3,9 @@
 # YES_BASH
 # YES_DASH
 
-#SOURCING=$((SOURCING+1))
+: $((SOURCING+=1))
 #. ~/sh/note # FIXME: don't do this?
-#SOURCING=$((SOURCING-1))
+: $((SOURCING-=1))
 
 baks() { # backup, timestamped
     local ret=0

sh/sc

@@ -1,8 +1,8 @@
 #!/usr/bin/env bash
 
-SOURCING=$((SOURCING+1))
+: $((SOURCING+=1))
 . ~/sh/ea # FIXME: don't do this? somehow?
-SOURCING=$((SOURCING-1))
+: $((SOURCING-=1))
 
 sc_shorten() {
     REPLY="${1:2:2}${1:5:2}${1:8:2}${1:11:12}"

sh/scropt

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 # YES_ZSH
 
-#SOURCING=$((SOURCING+1))
+: $((SOURCING+=1))
 #. ~/sh/now # FIXME: don't do this?
-#SOURCING=$((SOURCING-1))
+: $((SOURCING-=1))
 
 scropt() {
     local now=$(now)

sh/sum

@@ -6,7 +6,7 @@
 sum() {
     local sum=0
     for i; do
-        sum=$((sum+i))
+        : $((sum+=i))
     done
     echo "$sum"
 }