From: porkchop@invalid.foo   
      
   On Sat, 8 Nov 2025 19:28:20 -0000 (UTC), Lew Pitcher wrote:   
      
   > On Sat, 08 Nov 2025 19:01:00 +0000, Michael Sanders wrote:   
   >   
   >> One of many newbie questions from me... Cant find the info I'm looking for.   
   >>   
   >> If SIG_IGN is an acronym for signal ignore, then what does DFL mean?   
   >> I've know (well I presume) it restores default behavior, but the acronym?   
   >   
   > From the C11 draft standard (yes, I know, but that's the most current I have)   
   >   
   > 7.14.1.1 The signal function   
   >          2. ... If the value of func is SIG_DFL, default handling for that   
   >             signal will occur.   
   >   
   > Neither the C standard, nor the Posix standards or Unix manuals before that,   
   > seem to specify exactly _why_ SIG_DFL is named that way. Presumably because   
   > other abbreviations would somehow conflict or possibly be confused with   
   > existing nomenclature (SIGUSR1 and SIGUSR2, for instance, are user-DEFined   
   > signals, and SIG_DEF might confuse someone who isn't entirely familiar with   
   > the nomenclature), or because (like many abbreviations in Unix, "DeFauLt"   
   > made more sense to someone.   
      
   Thanks again Lew. I'm running with: [D]e[F]ault [L]evel in my // comments.   
      
   --   
   :wq   
   Mike Sanders   
      
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