Mention `exec-path' in some process related doc strings

* src/callproc.c (Fcall_process_region):
(Fcall_process):
* src/process.c (Fmake_process): Mention `exec-path' in the doc
strings (bug#42704).

diff --git a/src/callproc.c b/src/callproc.c
index 65c858393a910e480982f165ab68096a7d60f461..e3346e2eabb886ad8ec4b92b53508faf6f01bf97 100644 (file)
--- a/src/callproc.c
+++ b/src/callproc.c
@@ -231,6 +231,9 @@ DESTINATION can also have the form (REAL-BUFFER STDERR-FILE); in that case,
 Fourth arg DISPLAY non-nil means redisplay buffer as output is inserted.
 Remaining arguments ARGS are strings passed as command arguments to PROGRAM.
 
+If PROGRAM is not an absolute file name, `call-process' will look for
+PROGRAM in `exec-path' (which is a list of directories).
+
 If executable PROGRAM can't be found as an executable, `call-process'
 signals a Lisp error.  `call-process' reports errors in execution of
 the program only through its return and output.
@@ -1060,6 +1063,9 @@ Sixth arg DISPLAY non-nil means redisplay buffer as output is inserted.
 Remaining arguments ARGS are passed to PROGRAM at startup as command-line
 arguments.
 
+If PROGRAM is not an absolute file name, `call-process-region' will
+look for PROGRAM in `exec-path' (which is a list of directories).
+
 If BUFFER is 0, `call-process-region' returns immediately with value nil.
 Otherwise it waits for PROGRAM to terminate
 and returns a numeric exit status or a signal description string.

diff --git a/src/process.c b/src/process.c
index 15634e4a8b0b5f971ed9d9079735e0782320fe63..3aa105ae342c720d36852cc9a42e655b0350889f 100644 (file)
--- a/src/process.c
+++ b/src/process.c
@@ -1654,7 +1654,10 @@ you specify a filter function to handle the output.  BUFFER may be
 also nil, meaning that this process is not associated with any buffer.
 
 :command COMMAND -- COMMAND is a list starting with the program file
-name, followed by strings to give to the program as arguments.
+name, followed by strings to give to the program as arguments.  If the
+program file name is not an absolute file name, `make-process' will
+look for the program file name in `exec-path' (which is a list of
+directories).
 
 :coding CODING -- If CODING is a symbol, it specifies the coding
 system used for both reading and writing for this process.  If CODING