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Alexandre Duret-Lutz authored
When running `Display' in TAF-Kit's editor would enter a warp zone if dotty is not in PATH: because of the missing exit() after execvp(), two forks of TAF-Kit's editor would compete for the terminal. * include/vaucanson/tools/out_display.hxx (out_display): Exit if execvp returns an error, and report the failure.
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