================================================================================
Export keyword
:cst
================================================================================

export VAR=one
export  VAR  = one
export	TAB=two
export export=var

--------------------------------------------------------------------------------

1:0  - 5:0    document
1:0  - 1:14     assignment
1:0  - 1:6        "export"
1:7  - 1:10       key: identifier `VAR`
1:10 - 1:11       "="
1:11 - 1:14       value: value `one`
2:0  - 2:18     assignment
2:0  - 2:6        "export"
2:8  - 2:11       key: identifier `VAR`
2:13 - 2:14       "="
2:15 - 2:18       value: value `one`
3:0  - 3:14     assignment
3:0  - 3:6        "export"
3:7  - 3:10       key: identifier `TAB`
3:10 - 3:11       "="
3:11 - 3:14       value: value `two`
4:0  - 4:17     assignment
4:0  - 4:6        "export"
4:7  - 4:13       key: identifier `export`
4:13 - 4:14       "="
4:14 - 4:17       value: value `var`

================================================================================
Export-like identifiers
:cst
================================================================================

export=one
export = one
exportVAR=two
exportVAR = two


--------------------------------------------------------------------------------

1:0  - 6:0    document
1:0  - 1:10     assignment
1:0  - 1:6        key: identifier `export`
1:6  - 1:7        "="
1:7  - 1:10       value: value `one`
2:0  - 2:12     assignment
2:0  - 2:6        key: identifier `export`
2:7  - 2:8        "="
2:9  - 2:12       value: value `one`
3:0  - 3:13     assignment
3:0  - 3:9        key: identifier `exportVAR`
3:9  - 3:10       "="
3:10 - 3:13       value: value `two`
4:0  - 4:15     assignment
4:0  - 4:9        key: identifier `exportVAR`
4:10 - 4:11       "="
4:12 - 4:15       value: value `two`