Bash config: auto-pagination trick for selected cmds (rpm, ...)

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>

1 files changed, 26 insertions, 1 deletions

diff --git a/.bashrc b/.bashrc
index 1491d82..9b5045d 100644
--- a/.bashrc
+++ b/.bashrc
@@ -26,7 +26,9 @@ _linkalias () {
 linkalias () { alias "$1=_linkalias $2"; }
 
 # Source the other common definitions
-for f in /etc/bashrc ~/.bashrc-dotfiles ~/.bashrc-fedora ~/.bashrc-work ~/.bashrc-xml ~/.bashrc-priv; do
+_bashconfs="~/.bashrc-dotfiles ~/.bashrc-fedora ~/.bashrc-work ~/.bashrc-xml ~/.bashrc-priv ~/.bashrc-preexec"
+for f in ${_bashconfs}; do
+	f=${f/#~/$HOME}
 	[ -f "${f}" ] && source "${f}" || :
 done
 
@@ -117,3 +119,26 @@ img-qr () {
 	  || { input=$(</dev/stdin); title+="$(echo "${input}" | head -n1)"; }
 	xloadimage -fit -shrink -title "${title}" <(qrencode -m0 -s40 -o- "${input}" )
 }
+
+# prexec stuff
+
+_preexec_flag=0
+# idea is simple: auto-paginate output of selected commads that cannot do it
+#                 on their own
+# XXX: hacky, not exactly sure why this (and so far only this) works :)
+preexec() {
+	local cmd=${1%% *}
+	#test ${_preexec_flag} -eq 0 && test ${BASH_SUBSHELL} -eq 0 \
+	#  || { _preexec_flag=0; return 0; }
+	test ${BASH_SUBSHELL} -eq 0 || { _preexec_flag=0; return 0; }
+	case "$1" in
+	rpm\ *|yum\ list\ *)
+		_preexec_flag=1
+		${1} <&- 2>&1 | ${PAGER}
+		trap "_preexec_flag=0; trap - RETURN;" RETURN
+		return 2
+		;;
+	esac
+}
+
+preexec_install