Document pessimistic operator and eval_gemfile in gemfile(5) - #9719
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The handwritten Gemfile guide on guides.rubygems.org is planned to be replaced by this generated man page, but its explanation of the ~> specifier and the eval_gemfile method have no equivalent here. Port both ahead of the replacement so the information is not lost.
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The handwritten Gemfile guide on guides.rubygems.org is planned to be replaced by the generated gemfile(5) page. Comparing the two ahead of that, two pieces of the guide have no equivalent in the man page: the meaning of the pessimistic specifier
~>and theeval_gemfilemethod. This ports both now so the replacement will not lose information, rewritten to match the man page style. The~>explanation goes into theVERSIONsection underGEMS, andeval_gemfilegets a newEVAL_GEMFILEsection afterGEMSPEC. I checkedDsl#eval_gemfileto confirm that relative paths are resolved against the directory of the file containing the call. The roff page was regenerated withrake man:buildpinned to the currentMAN_PAGES_DATE, so onlygemfile.5changes.