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authorPeter Stephenson <pws@users.sourceforge.net>2001-12-07 12:59:08 +0000
committerPeter Stephenson <pws@users.sourceforge.net>2001-12-07 12:59:08 +0000
commit64b4bfe6fc8ae3e12bfdc4b5f776fa5d2cc02d24 (patch)
treec37564e424ea1c91c2bd6197fa06a97f094dc248 /Functions/Misc/zcalc
parent960a7e534702b487d82b28dde99053db6f33b992 (diff)
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* 16310: Functions/Misc/zcalc, Doc/Zsh/contrib.yo: separate zcalc
history, handle errors in expression, document -#base option.
Diffstat (limited to 'Functions/Misc/zcalc')
-rw-r--r--Functions/Misc/zcalc22
1 files changed, 22 insertions, 0 deletions
diff --git a/Functions/Misc/zcalc b/Functions/Misc/zcalc
index 5d0264922..5e01e73d0 100644
--- a/Functions/Misc/zcalc
+++ b/Functions/Misc/zcalc
@@ -88,6 +88,25 @@
 emulate -L zsh
 setopt extendedglob
 
+# can't be local since required in EXIT trap
+zcalc_orighist=$HISTFILE 
+local temphist=${TMPPREFIX}hist SAVEHIST=$HISTSIZE
+HISTFILE=$temphist
+fc -W
+
+local HISTSIZE=0
+HISTSIZE=$SAVEHIST
+HISTFILE=~/.zcalc_history
+[[ -f $HISTFILE ]] && fc -R
+
+zcalc_restore() {
+    unfunction zcalc_restore
+    fc -W
+    HISTFILE=$zcalc_orighist
+    fc -R
+}
+trap zcalc_restore HUP INT QUIT EXIT
+
 local line latest base defbase match mbegin mend psvar optlist opt arg
 integer num
 
@@ -172,7 +191,10 @@ while vared -cehp "${(%)ZCALCPROMPT}" line; do
     # 
     # Since it's a string, we'd better make sure we know which
     # base it's in, so don't change that until we actually print it.
+    latest=
     eval "latest=\$(( $line ))"
+    # on error $latest is not set; let user re-edit line
+    [[ -n $latest ]] || continue
     argv[num++]=$latest
     psvar[1]=$num
     if [[ -z $base ]]; then