[Emacs-diffs] trunk r115209: * lisp/emacs-lisp/helpers.el: Add some string helpers.

[Bozhidar Batsov]

------------------------------------------------------------
revno: 115209
revision-id: address@hidden
parent: address@hidden
committer: Bozhidar Batsov <address@hidden>
branch nick: master
timestamp: Sun 2013-11-24 11:31:51 +0200
message:
  * lisp/emacs-lisp/helpers.el: Add some string helpers.
  
  (string-trim-left): Removes leading whitespace.
  (string-trim-right): Removes trailing whitespace.
  (string-trim): Removes leading and trailing whitespace.
modified:
  etc/NEWS                       news-20100311060928-aoit31wvzf25yr1z-1
  lisp/ChangeLog                 changelog-20091113204419-o5vbwnq5f7feedwu-1432
  lisp/emacs-lisp/helpers.el     helpers.el-20131104130751-8dd4wji5crsqfatf-1

=== modified file 'etc/NEWS'
--- a/etc/NEWS  2013-11-24 08:49:44 +0000
+++ b/etc/NEWS  2013-11-24 09:31:51 +0000
@@ -769,6 +769,9 @@
 ** New library helpers.el for misc helper functions
 *** `hash-table-keys'
 *** `hash-table-values'
+*** `string-trim-left'
+*** `string-trim-right'
+*** `string-trim'
 
 ** Obsoleted functions:
 *** `log10'

=== modified file 'lisp/ChangeLog'
--- a/lisp/ChangeLog    2013-11-24 08:49:44 +0000
+++ b/lisp/ChangeLog    2013-11-24 09:31:51 +0000
@@ -1,5 +1,10 @@
 2013-11-24  Bozhidar Batsov  <address@hidden>
 
+       * emacs-lisp/helpers.el: Add some string helpers.
+       (string-trim-left): Removes leading whitespace.
+       (string-trim-right): Removes trailing whitespace.
+       (string-trim): Removes leading and trailing whitespace.
+
        * subr.el (string-suffix-p): New function.
 
 2013-11-23  Glenn Morris  <address@hidden>

=== modified file 'lisp/emacs-lisp/helpers.el'
--- a/lisp/emacs-lisp/helpers.el        2013-11-04 19:25:09 +0000
+++ b/lisp/emacs-lisp/helpers.el        2013-11-24 09:31:51 +0000
@@ -37,6 +37,22 @@
     (maphash (lambda (_k v) (push v values)) hash-table)
     values))
 
+(defsubst string-trim-left (string)
+  "Remove leading whitespace from STRING."
+  (if (string-match "\\`[ \t\n\r]+" string)
+      (replace-match "" t t string)
+    string))
+
+(defsubst string-trim-right (string)
+  "Remove trailing whitespace from STRING."
+  (if (string-match "[ \t\n\r]+\\'" string)
+      (replace-match "" t t string)
+    string))
+
+(defsubst string-trim (string)
+  "Remove leading and trailing whitespace from STRING."
+  (string-trim-left (string-trim-right string)))
+
 (provide 'helpers)
 
 ;;; helpers.el ends here