Fish shell de­sign prin­ci­ples 16 Feb 2016

These de­sign prin­ci­ples are a good read. Not nec­es­sar­ily di­rectly ap­plic­a­ble to most types of soft­ware, but the spirit and di­rec­tion of thought is broadly rel­e­vant across many types of soft­ware.

The fish de­sign has three high level goals. These are:

• Everything that can be done in other shell lan­guages should be pos­si­ble to do in fish, though fish may rely on ex­ter­nal com­mands in do­ing so.
• Fish should be user friendly, but not at the ex­pense of ex­pres­sive­ness. Most trade­offs be­tween power and ease of use can be avoided with care­ful de­sign.
• Whenever pos­si­ble with­out break­ing the above goals, fish should fol­low the Posix syn­tax.

To achieve these high-level goals, the fish de­sign re­lies on a num­ber of more spe­cific de­sign prin­ci­ples. These are pre­sented be­low, to­gether with a ra­tio­nale and a few ex­am­ples for each.

Link: http://​ift.tt/​1DU­CR4W

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