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-rw-r--r--README.md2
-rwxr-xr-xbin/uglifyjs14
2 files changed, 12 insertions, 4 deletions
diff --git a/README.md b/README.md
index 073a8715..3b99441b 100644
--- a/README.md
+++ b/README.md
@@ -253,7 +253,7 @@ cover most standard JS and DOM properties defined in various browsers. Pass
`--reserve-domprops` to read that in.
You can also use a regular expression to define which property names should be
-mangled. For example, `--mangle-regex="^_"` will only mangle property names
+mangled. For example, `--mangle-regex="/^_/"` will only mangle property names
that start with an underscore.
When you compress multiple files using this option, in order for them to
diff --git a/bin/uglifyjs b/bin/uglifyjs
index 9a1323fd..4768f766 100755
--- a/bin/uglifyjs
+++ b/bin/uglifyjs
@@ -192,6 +192,15 @@ function writeNameCache(key, cache) {
return UglifyJS.writeNameCache(ARGS.name_cache, key, cache);
}
+function extractRegex(str) {
+ if (/^\/.*\/[a-zA-Z]*$/.test(str)) {
+ var regex_pos = str.lastIndexOf("/");
+ return new RegExp(str.substr(1, regex_pos - 1), str.substr(regex_pos + 1));
+ } else {
+ throw new Error("Invalid regular expression: " + str);
+ }
+}
+
if (ARGS.quotes === true) {
ARGS.quotes = 3;
}
@@ -218,9 +227,8 @@ if (BEAUTIFY)
if (ARGS.comments != null) {
if (/^\/.*\/[a-zA-Z]*$/.test(ARGS.comments)) {
- var regex_pos = ARGS.comments.lastIndexOf("/");
try {
- OUTPUT_OPTIONS.comments = new RegExp(ARGS.comments.substr(1, regex_pos - 1), ARGS.comments.substr(regex_pos + 1));
+ OUTPUT_OPTIONS.comments = extractRegex(ARGS.comments);
} catch (e) {
print_error("ERROR: Invalid --comments: " + e.message);
}
@@ -379,7 +387,7 @@ async.eachLimit(files, 1, function (file, cb) {
var regex;
try {
- regex = ARGS.mangle_regex ? new RegExp(ARGS.mangle_regex) : null;
+ regex = ARGS.mangle_regex ? extractRegex(ARGS.mangle_regex) : null;
} catch (e) {
print_error("ERROR: Invalid --mangle-regex: " + e.message);
process.exit(1);