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Added some smallish comments to help folks understand why we have two tables
of builtins and the reasoning behind it.
This commit is contained in:
parent
c41e8c840f
commit
37653aaf9c
7
lash.c
7
lash.c
@ -112,7 +112,9 @@ static int runCommand(struct job newJob, struct jobSet *jobList, int inBg);
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static int busy_loop(FILE * input);
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/* Table of built-in functions */
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/* Table of built-in functions (these are non-forking builtins, meaning they
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* can change global variables in the parent shell process but they will not
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* work with pipes and redirects; 'unset foo | whatever' will not work) */
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static struct builtInCommand bltins[] = {
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{"bg", "Resume a job in the background", "bg [%%job]", builtin_fg_bg},
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{"cd", "Change working directory", "cd [dir]", builtin_cd},
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@ -125,7 +127,8 @@ static struct builtInCommand bltins[] = {
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{NULL, NULL, NULL, NULL}
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};
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/* Table of built-in functions */
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/* Table of forking built-in functions (things that fork cannot change global
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* variables in the parent process, such as the current working directory) */
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static struct builtInCommand bltins_forking[] = {
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{"env", "Print all environment variables", "env", builtin_env},
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{"pwd", "Print current directory", "pwd", builtin_pwd},
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7
sh.c
7
sh.c
@ -112,7 +112,9 @@ static int runCommand(struct job newJob, struct jobSet *jobList, int inBg);
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static int busy_loop(FILE * input);
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/* Table of built-in functions */
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/* Table of built-in functions (these are non-forking builtins, meaning they
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* can change global variables in the parent shell process but they will not
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* work with pipes and redirects; 'unset foo | whatever' will not work) */
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static struct builtInCommand bltins[] = {
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{"bg", "Resume a job in the background", "bg [%%job]", builtin_fg_bg},
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{"cd", "Change working directory", "cd [dir]", builtin_cd},
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@ -125,7 +127,8 @@ static struct builtInCommand bltins[] = {
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{NULL, NULL, NULL, NULL}
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};
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/* Table of built-in functions */
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/* Table of forking built-in functions (things that fork cannot change global
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* variables in the parent process, such as the current working directory) */
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static struct builtInCommand bltins_forking[] = {
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{"env", "Print all environment variables", "env", builtin_env},
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{"pwd", "Print current directory", "pwd", builtin_pwd},
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@ -112,7 +112,9 @@ static int runCommand(struct job newJob, struct jobSet *jobList, int inBg);
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static int busy_loop(FILE * input);
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/* Table of built-in functions */
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/* Table of built-in functions (these are non-forking builtins, meaning they
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* can change global variables in the parent shell process but they will not
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* work with pipes and redirects; 'unset foo | whatever' will not work) */
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static struct builtInCommand bltins[] = {
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{"bg", "Resume a job in the background", "bg [%%job]", builtin_fg_bg},
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{"cd", "Change working directory", "cd [dir]", builtin_cd},
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@ -125,7 +127,8 @@ static struct builtInCommand bltins[] = {
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{NULL, NULL, NULL, NULL}
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};
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/* Table of built-in functions */
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/* Table of forking built-in functions (things that fork cannot change global
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* variables in the parent process, such as the current working directory) */
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static struct builtInCommand bltins_forking[] = {
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{"env", "Print all environment variables", "env", builtin_env},
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{"pwd", "Print current directory", "pwd", builtin_pwd},
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