Add ssection

scripts/ssection

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+# This script replaces a section of text in a file marked by the bash
+# regular expression passed as the first argument and ending with the
+# second argument with the text in the the third argument The beginning
+# and ending lines themselves are discarded when replaced.
+
+ssection () {
+  local beg="$1" end="$2" buf="$3"
+
+  [[ -z "$beg" || -z "$end" ]] && echo "usage: ${0##*/} BEGX ENDX [STRING]" && return 1
+
+  local in=no
+
+  while IFS= read -r line; do
+
+
+    if [[ "$line" =~ $beg ]]; then
+      in=yes
+      continue
+    fi
+
+    if [[ "$line" =~ $end ]]; then
+      in=no
+      printf "$buf"
+      continue
+    fi
+
+    [[ "$in" == no ]] && echo "$line"
+
+  done
+
+}
+
+ssection "$@"