diff options
Diffstat (limited to 'lisp/env.el')
| -rw-r--r-- | lisp/env.el | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/lisp/env.el b/lisp/env.el index 38a9e865283..54bd0cdfb33 100644 --- a/lisp/env.el +++ b/lisp/env.el @@ -97,17 +97,18 @@ Use `$$' to insert a single dollar sign." (defun setenv (variable &optional value unset substitute-env-vars frame) "Set the value of the environment variable named VARIABLE to VALUE. VARIABLE should be a string. VALUE is optional; if not provided or -nil, the environment variable VARIABLE will be removed. UNSET -if non-nil means to remove VARIABLE from the environment. +nil, the environment variable VARIABLE will be removed. +UNSET if non-nil means to remove VARIABLE from the environment. SUBSTITUTE-ENV-VARS, if non-nil, means to substitute environment variables in VALUE with `substitute-env-vars', where see. Value is the new value if VARIABLE, or nil if removed from the environment. -Interactively, a prefix argument means to unset the variable. -Interactively, the current value (if any) of the variable -appears at the front of the history list when you type in the new value. -Interactively, always replace environment variables in the new value. +Interactively, a prefix argument means to unset the variable, and +otherwise the current value (if any) of the variable appears at +the front of the history list when you type in the new value. +This function always replaces environment variables in the new +value when called interactively. If VARIABLE is set in `process-environment', then this function modifies its value there. Otherwise, this function works by @@ -212,11 +213,11 @@ VARIABLE should be a string. Value is nil if VARIABLE is undefined in the environment. Otherwise, value is a string. If optional parameter FRAME is non-nil, then it should be a -frame. If the specified terminal device has its own set of -environment variables, this function will look up VARIABLE in it. +frame. If that frame has its own set of environment variables, +this function will look up VARIABLE in there. Otherwise, this function searches `process-environment' for -VARIABLE. If it was not found there, then it continues the +VARIABLE. If it is not found there, then it continues the search in either `global-environment' or the environment list of the selected frame, depending on the value of `local-environment-variables'." |