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new: nim -e:cmd to run a command directly; also fixes #15731 (#15687)

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* new: `nim -i cmd`
* rename -i to -e (for eval); consistent with majority of other programing languages
* `nim e -e:cmd` now works; bugfix: `echo cmd | nim e -` now works
* honor --betterRun
* address comments
* --eval alias for -e (replaces undocumented --eval which was a noop)
* --eval now defaults to e (nimscript) instead of r
* address comment: remove -e, only keep --eval
* address comment
* fixup
* Update compiler/nimconf.nim

Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
This commit is contained in:
Timothee Cour 2020-11-09 09:07:22 -06:00 • committed by GitHub
commit c1664f93b0
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13 changed files with 75 additions and 26 deletions
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5
compiler/main.nim
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@ -348,11 +348,12 @@ proc mainCommand*(graph: ModuleGraph) =
conf.cmd = cmdInteractive
commandInteractive(graph)
of "e":
if not fileExists(conf.projectFull):
if conf.projectIsCmd or conf.projectIsStdin: discard
elif not fileExists(conf.projectFull):
rawMessage(conf, errGenerated, "NimScript file does not exist: " & conf.projectFull.string)
elif not conf.projectFull.string.endsWith(".nims"):
rawMessage(conf, errGenerated, "not a NimScript file: " & conf.projectFull.string)
# main NimScript logic handled in cmdlinehelper.nim.
# main NimScript logic handled in `loadConfigs`.
of "nop", "help":
# prevent the "success" message:
conf.cmd = cmdDump