[COMMIT] Return a Bytecount, read_process_output(), no need for bytecount_to_charcount()

APPROVE COMMIT NOTE: This patch has been committed # HG changeset patch # User Aidan Kehoe <kehoea(a)parhasard.net&gt; # Date 1506161926 -3600 # Sat Sep 23 11:18:46 2017 +0100 # Node ID d3e0eec3a5082a28cdff11a9e5629b076abd4a17 # Parent 8dea4d0549ac0a49456d01bba96171399456c227 Return a Bytecount, read_process_output(), no need for bytecount_to_charcount() src/ChangeLog addition: 2017-09-23 Aidan Kehoe <kehoea(a)parhasard.net&gt; * process.c (read_process_output): Have this return a Bytecount, not a Charcount; the precise number of characters wasn't used by our callers, so we were usually calling bytecount_to_charcount() for no reason. * process.h: Update the declaration of this function. diff -r 8dea4d0549ac -r d3e0eec3a508 src/ChangeLog --- a/src/ChangeLog Thu Sep 07 09:19:50 2017 +0100 +++ b/src/ChangeLog Sat Sep 23 11:18:46 2017 +0100 ＠＠ -1,3 +1,11 ＠＠ +2017-09-23 Aidan Kehoe <kehoea(a)parhasard.net&gt; + + * process.c (read_process_output): Have this return a Bytecount, + not a Charcount; the precise number of characters wasn't used by + our callers, so we were usually calling bytecount_to_charcount() + for no reason. + * process.h: Update the declaration of this function. + 2017-06-28 Aidan Kehoe <kehoea(a)parhasard.net&gt; * text.c (Fchar_width): diff -r 8dea4d0549ac -r d3e0eec3a508 src/process.c --- a/src/process.c Thu Sep 07 09:19:50 2017 +0100 +++ b/src/process.c Sat Sep 23 11:18:46 2017 +0100 ＠＠ -1079,17 +1079,16 ＠＠ /* Read pending output from the process channel, starting with our buffered-ahead character if we have one. - Yield number of characters read. + Yield number of bytes read. This function reads at most 1024 bytes. If you want to read all available subprocess output, you must call it repeatedly until it returns zero. */ - -Charcount +Bytecount read_process_output (Lisp_Object process, int read_stderr) { /* This function can GC */ - Bytecount nbytes, nchars; + Bytecount nbytes; Ibyte chars[1025]; Lisp_Object outstream; Lisp_Process *p = XPROCESS (process); ＠＠ -1139,16 +1138,16 ＠＠ /* !!#### if the coding system changed as a result of reading, we need to change the output coding system accordingly. */ - nchars = bytecount_to_charcount (chars, nbytes); outstream = filter; if (!NILP (outstream)) { /* Some FSF junk with running_asynch_code, to preserve the match data. Not necessary because we don't call process filters asynchronously (i.e. from within QUIT). */ - /* Don't catch errors here; we're not in any critical code. */ + /* Don't catch errors here; we're not in any critical code. call2() will + GCPRO() the string argument. */ call2 (outstream, process, make_string (chars, nbytes)); - return nchars; + return nbytes; } /* If no filter, write into buffer if it isn't dead. */ ＠＠ -1177,7 +1176,8 ＠＠ unbind_to (spec); UNGCPRO; } - return nchars; + + return nbytes; } int diff -r 8dea4d0549ac -r d3e0eec3a508 src/process.h --- a/src/process.h Thu Sep 07 09:19:50 2017 +0100 +++ b/src/process.h Sat Sep 23 11:18:46 2017 +0100 ＠＠ -99,7 +99,7 ＠＠ void status_notify (void); void kick_status_notify (void); void deactivate_process (Lisp_Object proc); -Charcount read_process_output (Lisp_Object proc, int read_stderr); +Bytecount read_process_output (Lisp_Object proc, int read_stderr); int process_has_separate_stderr (Lisp_Object proc); const char *signal_name (int signum); Lisp_Object canonicalize_host_name (Lisp_Object host); -- ‘As I sat looking up at the Guinness ad, I could never figure out / How your man stayed up on the surfboard after forty pints of stout’ (C. Moore)