b260234faf
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 |
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| docs | ||
| env | ||
| external | ||
| llnl | ||
| spack | ||
| spack_installable | ||