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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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6
compiler/cmdlinehelper.nim
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@ -41,7 +41,9 @@ proc initDefinesProg*(self: NimProg, conf: ConfigRef, name: string) =
proc processCmdLineAndProjectPath*(self: NimProg, conf: ConfigRef) =
self.processCmdLine(passCmd1, "", conf)
if self.supportsStdinFile and conf.projectName == "-":
if conf.projectIsCmd and conf.projectName in ["-", ""]:
handleCmdInput(conf)
elif self.supportsStdinFile and conf.projectName == "-":
handleStdinInput(conf)
elif conf.projectName != "":
try:
@ -59,6 +61,8 @@ proc loadConfigsAndRunMainCommand*(self: NimProg, cache: IdentCache; conf: Confi
graph: ModuleGraph): bool =
if self.suggestMode:
conf.command = "nimsuggest"
if conf.command == "e":
incl(conf.globalOptions, optWasNimscript)
loadConfigs(DefaultConfig, cache, conf, graph.idgen) # load all config files
if not self.suggestMode: