X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;f=bash-selector.sh;h=adca50855638bde9cdc85b84d327f5758d3ff564;hb=4d78182aa8ec7f31c89789ceef2af3d1f36211b6;hp=abf4059f64a3aff504af1f0a53a4cb94d84046cd;hpb=683fae45816f0a0118a94cef7e546b7566c29dd9;p=selector.git

diff --git a/bash-selector.sh b/bash-selector.sh
index abf4059..adca508 100755
--- a/bash-selector.sh
+++ b/bash-selector.sh
@@ -17,28 +17,46 @@
 # Contact <francois.fleuret@idiap.ch> for comments & bug reports        #
 #########################################################################
 
-set -e
+# This script installs two key-bindings:
+#
+# Alt-r for selector-based command history
+#
+# Alt-c for selector-based directoy history
+#
+# Note that you have to call it with ". bash-selector.sh" otherwise
+# the key-bindings will not be effective in your current bash
 
-# Selector based history
+######################################################################
+# Selector-based command history
+######################################################################
 
 function selector-history () {
     selector --bash -u -c 7,4,0,3 -q <(history)
 }
 
-# Maintains a list of visited directories and provide a selector-based
-# command to go back to any of them.
+######################################################################
+# Selector-based directory history
+######################################################################
+
+# The file where we will keep track of the directories
 
 export SELECTOR_CD_HISTORY
 
 [[ "${SELECTOR_CD_HISTORY}" ]] || SELECTOR_CD_HISTORY=${HOME}/.selector-cd-history
 
+# The function to use in place of the standard "cd"
+
 function selector-cd () {
     if [[ -z "$1" ]]; then
         cd
     else
         cd "$@"
     fi
-    echo $PWD | sed -e "s!${HOME}!~!" >> ${SELECTOR_CD_HISTORY}
+    TMP=$(mktemp /tmp/selector-cd.XXXXXX)
+    tail -1000 < ${SELECTOR_CD_HISTORY} > ${TMP}
+    echo $PWD | sed -e "s!${HOME}!~!" >> ${TMP}
+    cat ${TMP} > ${SELECTOR_CD_HISTORY}
+    rm -f ${TMP}
 }
 
 function selector-cd-search () {
@@ -53,6 +71,10 @@ function selector-cd-search () {
 
 alias cd=selector-cd
 
+######################################################################
+# The key-bindings themselves
+######################################################################
+
 # M-r puts the selected history line in place of the current one
 
 bind '"\C-[r":"\C-a\C-kselector-history\C-m"'