Todd Gamblin 1ee049ccc3 editing: add higher-precedence SPACK_EDITOR environment variable ... Other tools like git support `GIT_EDITOR` which takes higher precedence than the standard `VISUAL` or `EDITOR` variables. This adds similar support for Spack, in the `SPACK_EDITOR` env var. - [x] consolidate editor code from hooks into `spack.util.editor` - [x] add more editor tests - [x] add support for `SPACK_EDITOR` - [x] add a documentation section for controlling the editor and reference it		2023-04-18 03:42:56 -07:00
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spack	editing: add higher-precedence SPACK_EDITOR environment variable	2023-04-18 03:42:56 -07:00