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我已經安裝了nodejs和gulp來自動編譯引導少文件（v 3.3.5）和gulp-watch-less模塊。自動編譯引導少文件的吞嚥/ gulp-watch-less不會重新生成css
一切工作正常期待一件事：我必須停止並開始吞嚥重新生成bootstrap.css。
有關信息，咕嘟咕嘟被檢測到包括在一個bootstrap.less .LESS文件被修改，我有以下信息：
[23:14:40] Starting 'default'...
[23:14:42] Finished 'default' after 2.04 s
[23:16:42] LESS saw variable-overrides.less was changed
[23:16:42] LESS saw variable-overrides.less was changed
[23:16:42] LESS saw bootstrap.less was changed:by:import
[23:16:42] LESS saw bootstrap.less was changed:by:import
但是，當我打開bootstrap.css文件我不看到變化，直到我停下來再次開始吞嚥。
這是我gulpfile.js的內容：
var gulp = require('gulp');
var watchLess = require('gulp-watch-less');
var less = require('gulp-less');
gulp.task('default', function() {
return gulp.src('./../../../../drupal8/sandbox/felicity/themes/octogone/less/bootstrap.less')
.pipe(watchLess('./../../../../drupal8/sandbox/felicity/themes/octogone/less/bootstrap.less'))
.pipe(less())
.pipe(gulp.dest('./../../../../drupal8/sandbox/felicity/themes/octogone/css'));
});
此代碼是從gulp-watch-less page
有人能解釋我爲什麼bootstrap.css不自動重新產生的？