update docs on tsvtk again

Author: shenwei356

.gitignore

@@ -26,6 +26,7 @@ _testmain.go
 doc/site/*
 *.Rhistory
 csvtk/csvtk*
+csvtk/tsvtk
 csvtk/binaries*
 doc/site
 *ssshtest

csvtk/cmd/helper.go

@@ -305,7 +305,7 @@ func getConfigs(cmd *cobra.Command) Config {
 	var tabs bool
 	if val = os.Getenv("CSVTK_T"); val != "" {
 		tabs = isTrue(val)
-	} else if os.Args[0] == "tsvtk" {
+	} else if filepath.Base(os.Args[0]) == "tsvtk" {
 		tabs = true
 	} else {
 		tabs = getFlagBool(cmd, "tabs")

csvtk/cmd/root.go

@@ -74,6 +74,10 @@ Environment variables for frequently used global flags:
   - "CSVTK_H" for flag "-H/--no-header-row"
   - "CSVTK_QUIET" for flag "--quiet"
 
+You can also create a symbolic link named "tsvtk" to csvtk, or simply create a copy
+of the executable called "tsvtk". When invoked as "tsvtk", csvtk will automatically
+enable the "-t/--tabs" flag.
+
 `, VERSION),
 
 	Run: func(cmd *cobra.Command, args []string) {

doc/docs/faq.md

@@ -85,4 +85,6 @@ Environment variables for frequently used global flags:
   - `CSVTK_H` for flag `-H/--no-header-row`
   - `CSVTK_QUIET` for flag `--quiet`
 
-You can also create a soft link named `tsvtk` for `csvtk`, which sets `-t/--tabs` by default.
+You can also create a symbolic link named `tsvtk` to `csvtk`, or simply create a copy
+of the executable called `tsvtk`. When invoked as `tsvtk`, `csvtk` will automatically
+enable the `-t/--tabs` flag.

doc/docs/usage.md

@@ -175,6 +175,10 @@ Environment variables for frequently used global flags:
   - "CSVTK_T" for flag "-t/--tabs"
   - "CSVTK_H" for flag "-H/--no-header-row"
   - "CSVTK_QUIET" for flag "--quiet"
+  
+You can also create a symbolic link named "tsvtk" to csvtk, or simply create a copy
+of the executable called "tsvtk". When invoked as "tsvtk", csvtk will automatically
+enable the "-t/--tabs" flag.
 
 Usage:
   csvtk [flags]