Why gives Grunt / Recess an error and Lessc not when compiling Bootstrap 3 RC1?
问题 I add some code to mixins.less: img { &:extend(.img-responsive); } See also: Images not responsive by default in Twitter Bootstrap 3? and https://stackoverflow.com/a/15573240/1596547 When i run grunt dist from the command line i got: Running "recess:bootstrap" (recess) task >> Parser error in less/mixins.less >> 549. img { >> 550. &:extend(.img-responsive); >> 551. } Warning: Use --force to continue. Aborted due to warnings. But when i compile it with Lessc: lessc bootstrap.less i don't find